Kopari Beauty Star Bright Vitamin C Discoloration Correcting Serum

Kopari Beauty Star Bright Vitamin C Discoloration Correcting Serum

Efficacy100/100IrritancyHigh

Works for

Moisturizing
Niacinamide, Glycerin + 8 more
Works well
What the product description says
“Packed with potent actives such as niacinamide, tranexamic acid, and Kakadu plum to further help brighten, hydrate, and smooth for a radiant complexion.”
Source: Kopari

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. 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. The following ingredients in this product do the job: glycerin.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: caprylic/capric triglyceride, helianthus annuus seed oil.

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

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~2–3%
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~4.1–6.2%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~2.8–4.2%
Limnanthes alba seed oilKey active· EmollientEffect: HighThis oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient~1.4–2.2%
Tranexamic acidKey activeEffect: HighAn amino acid that is effective in reducing hyperpigmentation and evening out the skin tone. It can also help in skin barrier recovery. It is used to treat melasma, especially with injections and when taken orally~0.2–0.75%
Helianthus annuus seed oilKey active· Emollient, OcclusiveEffect: HighA great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function~0.15–0.5%
Ricinus communis seed oilKey active· Emollient, OcclusiveEffect: HighA plant oil that can help soften the skin. It might be helpful in calming down inflammation, but solid research is lacking. Is often used in lip products to create the needed product consistency~0.15–0.55%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~1.7–2.6%
Ascorbyl tetraisopalmitateEffect: Low, below effective doseA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.55–1.25%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.1–0.4%
Evens skin tone
Niacinamide, Tranexamic acid + 1 more
Works well
What the product description says
“Star Bright Vitamin C Discoloration Correcting Serum”
Source: Kopari

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

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~2–3%
Tranexamic acidKey activeEffect: HighAn amino acid that is effective in reducing hyperpigmentation and evening out the skin tone. It can also help in skin barrier recovery. It is used to treat melasma, especially with injections and when taken orally~0.2–0.75%
Ascorbyl tetraisopalmitateUnder-dosedA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.55–1.25%
Anti-aging
Side benefit · Niacinamide, Limnanthes alba seed oil + 2 more
Works well

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

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~2–3%
Limnanthes alba seed oilEffect: LowThis oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient~1.4–2.2%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.1–0.4%
Ascorbyl tetraisopalmitateUnder-dosedA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.55–1.25%
Anti-blemish
Side benefit · Niacinamide
Works well

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~2–3%

Can it cause trouble?

Irritancy
3 strong irritants: Parfum, Limonene + 1 more — patch-test recommended
High risk
We flagged 13 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~1–1.5%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.3%est.
LinaloolA fragrance. Can be irritatingHigh~0.05–0.25%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~2.8–4.2%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~1.7–2.6%est.
Ascorbyl tetraisopalmitateA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)Medium~0.55–1.25%est.
Acrylates/c10-30 alkyl acrylate crosspolymerMaintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix togetherMedium~0.45–1.1%est.
Trisodium ethylenediamine disuccinateUsed to improve stability of the formulationMedium~0.4–0.9%est.
Terminalia ferdinandiana fruit extractA plant extract that might have some anti-oxidant effect in skin, but evidence is lackingMedium~0.15–0.65%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.15–0.55%est.
Potassium sorbateA preservativeMedium~0.1–0.5%est.
Ricinus communis seed oilA plant oil that can help soften the skin. It might be helpful in calming down inflammation, but solid research is lacking. Is often used in lip products to create the needed product consistencyMedium~0.15–0.55%est.
Ci 42090A colorant (dye)Medium~0.05–0.15%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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Ingredients

Filter by role to see what each ingredient is doing.

Water~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~4.1–6.2%
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
Propanediol~3.5–5.2%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Caprylic/capric triglyceride~2.8–4.2%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Niacinamide~2–3%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Anti-agingEvens skin toneAnti-blemishMoisturizingReduces 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
Pentylene glycol~1.7–2.6%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Limnanthes alba seed oil~1.4–2.2%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-agingAnti-oxidation

This oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient

More about Limnanthes alba seed oil
Phenoxyethanol~0.5–1%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Parfum~1–1.5%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Castor oil/ipdi copolymer~0.9–1.35%
Formula
Irritation risk
Low

Helps improve the product texture

More about Castor oil/ipdi copolymer
Ascorbyl tetraisopalmitate~0.55–1.25%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidationEvens skin toneAnti-agingMoisturizing

A vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)

More about Ascorbyl tetraisopalmitate
Acrylates/c10-30 alkyl acrylate crosspolymer~0.45–1.1%
Irritant · medium
Irritation risk
Medium

Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together

More about Acrylates/c10-30 alkyl acrylate crosspolymer
Trisodium ethylenediamine disuccinate~0.4–0.9%
Irritant · medium
Irritation risk
Medium

Used to improve stability of the formulation

More about Trisodium ethylenediamine disuccinate
Carbomer~0.35–0.85%
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
Sodium hydroxide~0.35–0.75%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Dehydroxanthan gum~0.35–0.8%
Formula
Irritation risk
Low

Helps create thicker product formulations and stabilize emulsions

More about Dehydroxanthan gum
Cocos nucifera fruit juice~0.35–0.75%
Formula
Tranexamic acid~0.2–0.75%
Key active
Irritation risk
Low
Works for
Evens skin toneMoisturizing

An amino acid that is effective in reducing hyperpigmentation and evening out the skin tone. It can also help in skin barrier recovery. It is used to treat melasma, especially with injections and when taken orally

More about Tranexamic acid
Synthetic fluorphlogopite~0.2–0.7%
Formula
Irritation risk
Low

A mineral that is used as an optical filter (makes the skin looks nicer through light reflection) and to improve the texture of cosmetic products

More about Synthetic fluorphlogopite
Terminalia ferdinandiana fruit extract~0.15–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that might have some anti-oxidant effect in skin, but evidence is lacking

More about Terminalia ferdinandiana fruit extract
Citric acid~0.15–0.55%
Irritant · medium
Irritation risk
Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid
Sodium benzoate~0.15–0.5%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Potassium sorbate~0.1–0.5%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Ricinus communis seed oil~0.15–0.55%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-inflammatory

A plant oil that can help soften the skin. It might be helpful in calming down inflammation, but solid research is lacking. Is often used in lip products to create the needed product consistency

More about Ricinus communis seed oil
Helianthus annuus seed oil~0.15–0.5%
Key active
Irritation risk
Low
Works for
Moisturizing

A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function

More about Helianthus annuus seed oil
Tocopherol~0.1–0.4%
Formula
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Limonene~0.05–0.3%
Irritant · high
Irritation risk
High

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

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

A fragrance. Can be irritating

More about Linalool
Titanium dioxide~0.05–0.3%
Formula
Irritation risk
Low
Works for
Sun protection

Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin

More about Titanium dioxide
Ci 42090~0.05–0.15%
Irritant · medium
Irritation risk
Medium

A colorant (dye)

More about Ci 42090
Beta-carotene~0.05–0.15%
Formula
Irritation risk
Low

A colorant adding orange or bright yellow color

More about Beta-carotene
Ingredient list view

Water, Glycerin, Propanediol, Caprylic/capric triglyceride, Niacinamide, Pentylene glycol, Limnanthes alba seed oil, Phenoxyethanol, Parfum, Castor oil/ipdi copolymer, Ascorbyl tetraisopalmitate, Acrylates/c10-30 alkyl acrylate crosspolymer, Trisodium ethylenediamine disuccinate, Carbomer, Sodium hydroxide, Dehydroxanthan gum, Cocos nucifera fruit juice, Tranexamic acid, Synthetic fluorphlogopite, Terminalia ferdinandiana fruit extract, Citric acid, Sodium benzoate, Potassium sorbate, Ricinus communis seed oil, Helianthus annuus seed oil, Tocopherol, Limonene, Linalool, Titanium dioxide, Ci 42090, Beta-carotene

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Kopari
$52.00
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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
Kopari BeautyStar Bright Vitamin C Discoloration Correcting SerumYOUR PRODUCTSUNGBOON EDITORActive Marine Astaxanthin Capsule SerumSimpleBooster Serum 10% NiacinamidePurito SEOULTXA 6 Niacinamide 10 Retinal Serum
Match—86%86%85%
Price$52.00$18.80−$33.20$13.38−$38.62$16.46−$35.54
Shared key ingredients—5 of 84 of 85 of 8
Key difference—Copper Tripeptide-1PanthenolRetinal
Irritancy High Medium Low Medium
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 21 studies and safety reviews.

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Kopari Beauty Star Bright Vitamin C Discoloration Correcting Serum
Kopari BeautyStar Bright Vitamin C Discoloration Correcting Serum

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.