What's In My Jar
numbuzin No. 5 Goodbye Blemish Serum
numbuzin

numbuzin No. 5 Goodbye Blemish Serum

Efficacy100/100IrritancyHigh
See all ingredients

Works for

Evens skin tone
Niacinamide, 3-o-ethyl ascorbic acid + 5 more
Works well
What the product description says
“Helps restore the moisture of skin and evens out the skin tone, leaving a radiant-looking, clean complexion.”
Source: Lila Beauty

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: niacinamide

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually can help even out the skin tone: 3-o-ethyl ascorbic acid, glycyrrhiza glabra root extract.

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~1.5–2.3%
3-o-ethyl ascorbic acidKey activeEffect: MediumA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.6%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.7%
Glycyrrhiza glabra root extractEffect: LowA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals~0.2–0.75%
Dipotassium glycyrrhizateEffect: Low, below effective doseA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.15–0.65%
Ascorbic acidUnder-dosedThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~0.15–0.55%
Ascorbyl glucosideUnder-dosedA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.55%
Moisturizing
Niacinamide, Panthenol + 11 more
Works well
What the product description says
“Helps restore the moisture of skin and evens out the skin tone, leaving a radiant-looking, clean complexion.”
Source: Lila Beauty

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, sodium hyaluronate.

When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide, panthenol

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~1.5–2.3%
PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.15–0.65%
Methyl gluceth-20Key active· HumectantEffect: MediumHelps attract water to the upper layer of the skin and soften it~4.4–6.6%
GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~2.7–4%
Corallina officinalis extractKey activeEffect: HighRed algae extract that helps attract water to the upper layer of the skin and might contain antioxidants~0.4–1%
Centella asiatica extractKey activeEffect: HighA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.2–0.7%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.15–0.6%
Hydrolyzed jojoba estersKey activeEffect: HighHelps soften the upper layer of the skin~0.15–0.65%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~5.3–7.9%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.7%
Scutellaria baicalensis root extract· HumectantEffect: LowA plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant properties~0.2–0.75%
Dipotassium glycyrrhizateUnder-dosedA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.15–0.65%
AllantoinUnder-dosedHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.1–0.5%
Anti-aging
Niacinamide, Centella asiatica extract + 4 more
Works well
What the product description says
“Enriched with 75% vitamin extract as well as ascorbic acid and panthenol, this serum tackles visible signs of aging, brightens and restores moisture to skin.”
Source: Yesstyle

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains niacinamide.

These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: centella asiatica extract.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~1.5–2.3%
Centella asiatica extractKey activeEffect: MediumA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.2–0.7%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.7%
3-o-ethyl ascorbic acidEffect: LowA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.6%
Ascorbic acidUnder-dosedThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~0.15–0.55%
Ascorbyl glucosideUnder-dosedA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.55%
Anti-blemish
Niacinamide, Melia azadirachta leaf extract + 4 more
Works well
What the product description says
“No. 5 Goodbye Blemish Serum”
Source: Lila Beauty

This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide. This ingredient is used for treating acne and can have a noticeable effect.

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~1.5–2.3%
Melia azadirachta leaf extractEffect: LowA plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritating~0.85–1.25%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.7%
Centella asiatica extractEffect: LowA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.2–0.7%
AllantoinEffect: Low, below effective doseHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.1–0.5%
Rosmarinus officinalis leaf extractUnder-dosedCan be helpful in reducing inflammation in skin, including inflamed acne. It can be irritating~0.15–0.6%
Anti-oxidation
Side benefit · Camellia sinensis leaf extract, Centella asiatica extract + 10 more
May help

This product contains antioxidants (3-o-ethyl ascorbic acid, camellia sinensis leaf extract, centella asiatica extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Camellia sinensis leaf extractKey activeEffect: MediumCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.7%
Centella asiatica extractKey activeEffect: MediumA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.2–0.7%
3-o-ethyl ascorbic acidKey activeEffect: MediumA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.6%
Melia azadirachta flower extractEffect: LowA plant extract that might be helpful to neutralize free radicals in skin~1.2–1.9%
Ocimum sanctum leaf extractEffect: LowA plant extract that is rich in a fragrance compound eugenol that is a frequent allergen and can be irritating. It might also contain anti-oxidants to help neutralize free radicals~1–1.5%
Corallina officinalis extractEffect: LowRed algae extract that helps attract water to the upper layer of the skin and might contain antioxidants~0.4–1%
Scutellaria baicalensis root extractEffect: LowA plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant properties~0.2–0.75%
Glycyrrhiza glabra root extractEffect: LowA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals~0.2–0.75%
Polygonum cuspidatum root extractEffect: Low, below effective doseA plant extract that can contain resveratrol, an antioxidant that can help neutralize free radicals in skin. The effectiveness depends on the extract quality and concentration in the product~0.35–0.8%
Rosmarinus officinalis leaf extractEffect: Low, below effective doseCan be helpful in reducing inflammation in skin, including inflamed acne. It can be irritating~0.15–0.6%
Ascorbic acidUnder-dosedThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~0.15–0.55%
Ascorbyl glucosideUnder-dosedA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products~0.15–0.55%

Can it cause trouble?

Irritancy
7 strong irritants: Ocimum sanctum leaf extract, Citrus limon peel oil + 5 more — patch-test recommended
High risk
We flagged 21 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Ocimum sanctum leaf extractA plant extract that is rich in a fragrance compound eugenol that is a frequent allergen and can be irritating. It might also contain anti-oxidants to help neutralize free radicalsHigh~1–1.5%est.
Melia azadirachta leaf extractA plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritatingHigh~0.85–1.25%est.
Curcuma longa root extractA plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritantHigh~0.5–1.1%est.
Citrus limon peel oilA highly irritating fragranceHigh~0.35–0.85%est.
Citrus aurantium dulcis peel oilAn essentil oil from orange peel. Potential allergen and can be irritatingHigh~0.35–0.85%est.
Citrus aurantifolia oil—High~0.35–0.85%est.
Scutellaria baicalensis root extractA plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant propertiesHigh~0.2–0.75%est.
Chamomilla recutita flower extractPlant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritatingHigh~0.15–0.7%est.
Rosmarinus officinalis leaf extractCan be helpful in reducing inflammation in skin, including inflamed acne. It can be irritatingHigh~0.15–0.6%est.
Ascorbic acidThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of agingHigh~0.15–0.55%est.
3-o-ethyl ascorbic acidA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in productsHigh~0.15–0.6%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.05–0.3%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.25%est.
1,2-hexanediolA preservativeMedium~0.6–1.35%est.
Melia azadirachta flower extractA plant extract that might be helpful to neutralize free radicals in skinMedium~1.2–1.9%est.
Polygonum cuspidatum root extractA plant extract that can contain resveratrol, an antioxidant that can help neutralize free radicals in skin. The effectiveness depends on the extract quality and concentration in the productMedium~0.35–0.8%est.
Glycyrrhiza glabra root extractA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicalsMedium~0.2–0.75%est.
Centella asiatica extractA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.Medium~0.2–0.7%est.
Ascorbyl glucosideA vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in productsMedium~0.15–0.55%est.
Polyglyceryl-10 laurateHelps water and oil mix togetherMedium~0.15–0.7%est.
Disodium edtaStabilizes the product formulationMedium~0.1–0.35%est.
Comedogenic
1 ingredient rated 2 or more on the 0–5 pore-clogging scale
1 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Corallina officinalis extractRed algae extract that helps attract water to the upper layer of the skin and might contain antioxidants3/5~0.4–1%est.
Alternatives
Cheaper, or higher on efficacy
Madagascar Centella Tone Brightening Capsule Ampoule
SKIN 1004. Madagascar Centella Tone Brightening Capsule Ampoule
Cheaper87% match
$6.12
Light On Vitamin C Serum for Radiance & Dark Spot Correction
Beauty of Joseon Light On Vitamin C Serum for Radiance & Dark Spot Correction
Cheaper85% match
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Ingredients

Filter by role to see what each ingredient is doing.

Hippophae rhamnoides extract~22–33%
Formula
Irritation risk
Low
More about Hippophae rhamnoides extract
Butylene glycol~5.3–7.9%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
Methyl gluceth-20~4.4–6.6%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and soften it

More about Methyl gluceth-20
Dipropylene glycol~3.4–5.1%
Formula
Irritation risk
Low

Helps to dissolve other ingredients in a formulation. Slows down the rate of product drying

More about Dipropylene glycol
Glycerin~2.7–4%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
1,2-hexanediol~0.6–1.35%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Niacinamide~1.5–2.3%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Evens skin toneAnti-agingMoisturizingAnti-blemishReduces irritationAnti-inflammatoryAntibacterialReduces redness

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide
Melia azadirachta flower extract~1.2–1.9%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that might be helpful to neutralize free radicals in skin

More about Melia azadirachta flower extract
Ocimum sanctum leaf extract~1–1.5%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

A plant extract that is rich in a fragrance compound eugenol that is a frequent allergen and can be irritating. It might also contain anti-oxidants to help neutralize free radicals

More about Ocimum sanctum leaf extract
Melia azadirachta leaf extract~0.85–1.25%
Irritant · high
Irritation risk
High
Works for
AntibacterialAnti-blemish

A plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritating

More about Melia azadirachta leaf extract
Curcuma longa root extract~0.5–1.1%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatory

A plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritant

More about Curcuma longa root extract
Corallina officinalis extract~0.4–1%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidation

Red algae extract that helps attract water to the upper layer of the skin and might contain antioxidants

More about Corallina officinalis extract
Citrus limon peel oil~0.35–0.85%
Irritant · high
Irritation risk
High

A highly irritating fragrance

More about Citrus limon peel oil
Citrus aurantium dulcis peel oil~0.35–0.85%
Irritant · high
Irritation risk
High

An essentil oil from orange peel. Potential allergen and can be irritating

More about Citrus aurantium dulcis peel oil
Citrus aurantifolia oil~0.35–0.85%
Irritant · high
Irritation risk
High
More about Citrus aurantifolia oil
Polygonum cuspidatum root extract~0.35–0.8%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that can contain resveratrol, an antioxidant that can help neutralize free radicals in skin. The effectiveness depends on the extract quality and concentration in the product

More about Polygonum cuspidatum root extract
Scutellaria baicalensis root extract~0.2–0.75%
Irritant · high
Irritation risk
High
Works for
AntibacterialAnti-inflammatoryAnti-oxidationMoisturizingReduces irritation

A plant extract that might contain a compound baicalin that could be helpful in neutralizing free radicals and reducing inflammation in skin. The baicalin concentration in skincare products is often too low for an effective action. Can be used for its fragrant properties

More about Scutellaria baicalensis root extract
Camellia sinensis leaf extract~0.3–0.7%
Key active
Irritation risk
Low
Works for
AntibacterialAnti-oxidationAnti-agingAnti-blemishEvens skin toneMoisturizing

Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation

More about Camellia sinensis leaf extract
Glycyrrhiza glabra root extract~0.2–0.75%
Irritant · medium
Irritation risk
Medium
Works for
Anti-inflammatoryReduces rednessEvens skin toneAnti-oxidationAntibacterial

A plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals

More about Glycyrrhiza glabra root extract
Chamomilla recutita flower extract~0.15–0.7%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatory

Plant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritating

More about Chamomilla recutita flower extract
Rosmarinus officinalis leaf extract~0.15–0.6%
Under-dosedIrritant · high
Irritation risk
High
Works for
Anti-blemishAnti-oxidationAntibacterial

Can be helpful in reducing inflammation in skin, including inflamed acne. It can be irritating

More about Rosmarinus officinalis leaf extract
Centella asiatica extract~0.2–0.7%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Anti-inflammatoryReduces rednessMoisturizingReduces irritationAnti-oxidationAnti-agingAnti-blemish

A plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.

More about Centella asiatica extract
Ascorbyl glucoside~0.15–0.55%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidationAnti-agingEvens skin tone

A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products

More about Ascorbyl glucoside
Ascorbic acid~0.15–0.55%
Under-dosedIrritant · high
Irritation risk
High
Works for
Anti-agingEvens skin toneAnti-oxidation

The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging

More about Ascorbic acid
3-o-ethyl ascorbic acid~0.15–0.6%
Key activeIrritant · high
Irritation risk
High
Works for
Anti-oxidationEvens skin toneAnti-aging

A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products

More about 3-o-ethyl ascorbic acid
Panthenol~0.15–0.65%
Hero · Moisturizing
Irritation risk
Low
Works for
Reduces rednessMoisturizingReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol
Sodium hyaluronate~0.15–0.6%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Dipotassium glycyrrhizate~0.15–0.65%
Under-dosed
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryEvens skin tone

A salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening

More about Dipotassium glycyrrhizate
Glycereth-26~0.15–0.65%
Formula
Irritation risk
Low

Helps create a thicker product consistency

More about Glycereth-26
Ammonium acryloyldimethyltaurate/vp copolymer~0.15–0.6%
Formula
Irritation risk
Low

Increases thickness of a product. Texture enhancer for oil-in-water emulsions

More about Ammonium acryloyldimethyltaurate/vp copolymer
Polyglyceryl-10 laurate~0.15–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Polyglyceryl-10 laurate
Carbomer~0.15–0.6%
Formula
Irritation risk
Low
Works for
Cleansing

Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations

More about Carbomer
Allantoin~0.1–0.5%
Under-dosed
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryReduces irritationReduces rednessAnti-blemishExfoliation

Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated

More about Allantoin
Tromethamine~0.15–0.5%
Formula
Irritation risk
Low

Helps adjust pH in products

More about Tromethamine
Water~0.1–0.5%
Formula
Irritation risk
Low

Plain old water

More about Water
Hydrolyzed jojoba esters~0.15–0.65%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Hydrolyzed jojoba esters
Disodium edta~0.1–0.35%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Citral~0.05–0.3%
Irritant · high
Irritation risk
High

A fragrance with a lemon scent. A likely irritant

More about Citral
Limonene~0.05–0.25%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Ingredient list view

Hippophae rhamnoides extract, Butylene glycol, Methyl gluceth-20, Dipropylene glycol, Glycerin, 1,2-hexanediol, Niacinamide, Melia azadirachta flower extract, Ocimum sanctum leaf extract, Melia azadirachta leaf extract, Curcuma longa root extract, Corallina officinalis extract, Citrus limon peel oil, Citrus aurantium dulcis peel oil, Citrus aurantifolia oil, Polygonum cuspidatum root extract, Scutellaria baicalensis root extract, Camellia sinensis leaf extract, Glycyrrhiza glabra root extract, Chamomilla recutita flower extract, Rosmarinus officinalis leaf extract, Centella asiatica extract, Ascorbyl glucoside, Ascorbic acid, 3-o-ethyl ascorbic acid, Panthenol, Sodium hyaluronate, Dipotassium glycyrrhizate, Glycereth-26, Ammonium acryloyldimethyltaurate/vp copolymer, Polyglyceryl-10 laurate, Carbomer, Allantoin, Tromethamine, Water, Hydrolyzed jojoba esters, Disodium edta, Citral, Limonene

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
numbuzinNo. 5 Goodbye Blemish SerumYOUR PRODUCTSKIN 1004.Madagascar Centella Tone Brightening Capsule AmpouleBeauty of JoseonLight On Vitamin C Serum for Radiance & Dark Spot CorrectionSKIN&LABVitamin C Brightening Serum
Match—87%85%84%
Price—$6.12$17.00$13.89
Shared key ingredients—5 of 137 of 137 of 13
Key difference—MadecassosideAdenosineRetinol
Irritancy High Low Low Medium
Drying alcohol————
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Product summary

"numbuzin - No. 5 Goodbye Blemish Serum" is effective for: Moisturizing, Evens skin tone, Anti-aging and Anti-blemish

Ingredient callouts

  • A good concentration of Niacinamide (1.50% - 2.30%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
  • This product also contains Vitamin C (Ascorbic Acid). It can be an effective active for anti-aging and evening out the skin tone, but in this product it is used for stabilizing other ingredients in the formulation. In this concentration (0.15% - 0.55%) it cannot have a noticeable benefit for the skin.
  • Humectants (sodium hyaluronate 0.15% - 0.60% and glycerin 2.70% - 4.00%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

Price

The product retails from 31.00A$ up to 55.80A$ in Australia, for 41.99CA$ in Canada and from 19.60$ up to 28.00$ in the United States.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 36 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    The influence of alkane chain length on the skin irritation potential of 1,2-alkanediolsncbi.nlm.nih.gov
  3. 3
    Niacinamide - mechanisms of action and its topical use in dermatologyncbi.nlm.nih.gov
  4. 4
    Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x ncbi.nlm.nih.gov
  5. 5
    Melia azedarachmdedge.com
  6. 6
    Preliminary and Pharmacological Profile of Melia azedarach L.: An Overviewjapsonline.com
numbuzin No. 5 Goodbye Blemish Serum
numbuzinNo. 5 Goodbye Blemish Serum
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