Sarah Chapman C1 VITAMIN C POWER 1 SERUM

Sarah Chapman C1 VITAMIN C POWER 1 SERUM

Efficacy100/100IrritancyHigh

Works for

Anti-aging
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~1.9–2.3%
Limnanthes alba seed oilEffect: LowThis oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient~1.5–1.9%
Sodium ascorbyl phosphateEffect: Low, below effective doseA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~0.7–1%
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~0.3–0.55%
Moisturizing
Niacinamide, Glycerin + 11 more
Works well
What the product description says
“, Radiance lost to pollution, environmental aggressors, dehydration or stress is restored while the complexion is refined for a more even skin tone and texture.”
Source: N/A

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, mannitol.

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: limnanthes alba seed oil, cetyl alcohol.

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~1.9–2.3%
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~1.8–2.2%
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~1.5–1.9%
MannitolKey active· HumectantEffect: HighHelps to attract water to the upper layer of the skin~1.2–1.5%
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~0.6–0.9%
Cetyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~0.5–0.75%
Tamarindus indica seed gumKey activeEffect: MediumHelps to attract water to the upper layer of the skin and create a nice product finish on the skin~0.3–0.6%
GlucoseKey active· HumectantEffect: MediumHelps attract water to the upper layer of the skin. Could be helpful in restoring the skin barrier function~0.2–0.4%
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~1–1.2%
LysolecithinEffect: LowLecithin derivative. It helps oil and water mix together and can enhance penetration of other ingredients. It helps soften the upper layer of the skin~0.75–1.15%
Caesalpinia spinosa gum· EmollientEffect: Low~0.3–0.55%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.4–0.6%
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~0.3–0.55%
Evens skin tone
Niacinamide, Tranexamic acid
Works well
What the product description says
“, Skin brightening and anti-pigmentation support, infused with Tranexamic Acid and Niacinamide, helps reduce inflammation and dark spots, even skin tone, strengthen the barrier function and stimulate collagen synthesis.”
Source: N/A

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~1.9–2.3%
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~0.6–0.9%
Anti-blemish
Not advertised by the brand · Niacinamide, Sodium ascorbyl phosphate
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~1.9–2.3%
Sodium ascorbyl phosphateUnder-dosedA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~0.7–1%

Can it cause trouble?

Irritancy
6 strong irritants: Parfum, Citrus paradisi fruit extract + 4 more — patch-test recommended
High risk
We flagged 14 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~0.6–0.9%est.
Decyl glucosideHelps oil and water mix together. Can be irritatingHigh~0.45–0.65%est.
Citrus paradisi fruit extract—High~0.2–0.4%est.
CitronellolA fragrance. Can be irritatingHigh~0.05–0.1%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.1%est.
LinaloolA fragrance. Can be irritatingHigh~0.05–0.15%est.
Benzyl salicylateA fragrance. Is a likely irritantHigh~0.05–0.1%est.
PhosphatidylcholineUsed to enhance the delivery of other ingredientsMedium~0.9–1.1%est.
Sodium ascorbyl phosphateA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin CMedium~0.7–1%est.
O-cymen-5-olA preservativeMedium~0.05–0.1%est.
Potassium sorbateA preservativeMedium~0.3–0.6%est.
Tamarindus indica seed gumHelps to attract water to the upper layer of the skin and create a nice product finish on the skinMedium~0.3–0.6%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.3–0.55%est.
Caesalpinia spinosa gum—Medium~0.3–0.55%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

User reviews

Would you recommend?
No community reviews yet.

Be the first — your take helps the next person decide.

Ingredients

Filter by role to see what each ingredient is doing.

Unspecified form of vitamin c~44–54%
Formula
Water~11–14%
Formula
Irritation risk
Low

Plain old water

More about Water
Soluble
Not recognized
Unspecified form of vitamin c~5–6.1%
Formula
Egt amino acid
Not recognized
Niacinamide~3.3–4%
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
Tranexamic acid~2.4–2.9%
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
Niacinamide~1.9–2.3%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Anti-agingEvens skin toneMoisturizingAnti-blemishReduces irritationAntibacterialReduces rednessAnti-inflammatory

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
Glycerin~1.8–2.2%
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
Limnanthes alba seed oil~1.5–1.9%
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
Silica~1.6–2%
Formula
Irritation risk
Low

Used to absorb oil and can temporarily mattify skin

More about Silica
Mannitol~1.2–1.5%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps to attract water to the upper layer of the skin

More about Mannitol
Butylene glycol~1–1.2%
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
Phosphatidylcholine~0.9–1.1%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Used to enhance the delivery of other ingredients

More about Phosphatidylcholine
Carbomer~0.75–1.15%
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
Lysolecithin~0.75–1.15%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Lecithin derivative. It helps oil and water mix together and can enhance penetration of other ingredients. It helps soften the upper layer of the skin

More about Lysolecithin
Sodium gluconate~0.7–1.05%
Formula
Irritation risk
Low

Helps stabilize product formulations

More about Sodium gluconate
Xanthan gum~0.7–1.1%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Sodium ascorbyl phosphate~0.7–1%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-blemishAnti-oxidationAnti-aging

A stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C

More about Sodium ascorbyl phosphate
Parfum~0.6–0.9%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Tranexamic acid~0.6–0.9%
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
O-cymen-5-ol~0.05–0.1%
Irritant · medium
Irritation risk
Medium

A preservative

More about O-cymen-5-ol
Sodium benzoate~0.25–0.5%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Potassium sorbate~0.3–0.6%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Cetyl alcohol~0.5–0.75%
Key active
Irritation risk
Low
Works for
CleansingMoisturizing

A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together

More about Cetyl alcohol
Lecithin~0.4–0.6%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin

More about Lecithin
Tamarindus indica seed gum~0.3–0.6%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps to attract water to the upper layer of the skin and create a nice product finish on the skin

More about Tamarindus indica seed gum
Decyl glucoside~0.45–0.65%
Irritant · high
Irritation risk
High
Works for
Cleansing

Helps oil and water mix together. Can be irritating

More about Decyl glucoside
Tocopherol~0.3–0.55%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-agingAnti-inflammatoryMoisturizing

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
Citric acid~0.3–0.55%
Irritant · medium
Irritation risk
Medium

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

More about Citric acid
Sodium hydroxide~0.3–0.5%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Caesalpinia spinosa gum~0.3–0.55%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing
More about Caesalpinia spinosa gum
Citrus paradisi fruit extract~0.2–0.4%
Irritant · high
Glucose~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin. Could be helpful in restoring the skin barrier function

More about Glucose
Sodium chloride~0.15–0.3%
Formula
Irritation risk
Low

Used to stabilize mixtures of oil and water, and create thicker, gel-like product textures

More about Sodium chloride
Oryza sativa hull powder~0.2–0.35%
Formula
Ergothioneine~0.1–0.2%
Formula
Irritation risk
Low
Works for
Anti-oxidation

Can help neutralize free radicals in skin. Preliminary studies show that it can be more effective than coenzyme Q10 but studies on effective concentration for topical applications are lacking

More about Ergothioneine
Citronellol~0.05–0.1%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Limonene~0.05–0.1%
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~0.05–0.15%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Benzyl salicylate~0.05–0.1%
Irritant · high
Irritation risk
High

A fragrance. Is a likely irritant

More about Benzyl salicylate
Ingredient list view

Unspecified form of vitamin c, Water, Unknown, Unspecified form of vitamin c, Unknown, Niacinamide, Tranexamic acid, Niacinamide, Glycerin, Limnanthes alba seed oil, Silica, Mannitol, Butylene glycol, Phosphatidylcholine, Carbomer, Lysolecithin, Sodium gluconate, Xanthan gum, Sodium ascorbyl phosphate, Parfum, Tranexamic acid, O-cymen-5-ol, Sodium benzoate, Potassium sorbate, Cetyl alcohol, Lecithin, Tamarindus indica seed gum, Decyl glucoside, Tocopherol, Citric acid, Sodium hydroxide, Caesalpinia spinosa gum, Citrus paradisi fruit extract, Glucose, Sodium chloride, Oryza sativa hull powder, Ergothioneine, Citronellol, Limonene, Linalool, Benzyl salicylate

Compare prices

Retailers ranked by price — lowest first.

🇬🇧 Amazon UK (UK)
Price unavailable Out of stock
Check
🇬🇧 Sarah Chapman (UK)
Price unavailable
Check

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

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
Sarah ChapmanC1 VITAMIN C POWER 1 SERUMYOUR PRODUCTBubble SkincareDay Dream Tone and Texture SerumhellobubbleDay Dream Vitamin C + Niacinamide Tone & Texture SerumDr. David JackGood Morning Vitamin C Serum
Match—89%89%88%
Price—$14.20$11.90$118.98
Shared key ingredients—4 of 74 of 73 of 7
Key difference—Alpha-ArbutinAlpha-ArbutinPotassium Azeloyl Diglycinate
Irritancy High Low Low Low
Drying alcohol————
View product Shop Shop Shop

More alternatives: HydroPeptide Firma-BrightSwisse Vitamin C 10% Brightening Booster Serum

Cheaper alternatives? Browse formulas in the same category.
We compare ingredient profiles across our catalog — pick the closest match for your budget.
Open dupe finder

Product summary

"Sarah Chapman - C1 VITAMIN C POWER 1 SERUM" is effective for: Anti-blemish, Anti-aging, Moisturizing and Evens skin tone

Ingredient callouts

  • A good concentration of Niacinamide (1.90% - 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.
  • Humectants (mannitol 1.20% - 1.50% and glycerin 1.80% - 2.20%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 24 studies and safety reviews.

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
Sarah Chapman C1 VITAMIN C POWER 1 SERUM
Sarah ChapmanC1 VITAMIN C POWER 1 SERUM

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

As an Amazon Associate, WIMJ earns from qualifying purchases.