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Common Heir 10% Vitamin C Serum
Common Heir

Common Heir 10% Vitamin C Serum

Efficacy100/100IrritancyLow
See all ingredients

Works for

Anti-aging
Tetrahexyldecyl ascorbate, Tocopherol
Works well
What the product description says
“Common Heir 10% Vitamin C Serum contains antioxidants and vitamin C to help boost your natural glow.”
Source: Credo Beauty

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

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.

Tetrahexyldecyl ascorbateKey activeEffect: HighBeing a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.~4.9–7.3%
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~0.1–0.45%
Anti-oxidation
Not advertised by the brand · Tetrahexyldecyl ascorbate, Glycyrrhiza glabra root extract + 2 more
Works well

This product contains antioxidants (tetrahexyldecyl ascorbate) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

Tetrahexyldecyl ascorbateKey activeEffect: HighBeing a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.~4.9–7.3%
Glycyrrhiza glabra root extractEffect: LowA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals~0.55–1.3%
Althaea officinalis root extractEffect: LowA plant extract that can help attract water to the upper layer of the skin and might help to reduce inflammation~0.2–0.75%
TocopherolUnder-dosedPure 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~0.1–0.45%
Evens skin tone
Not advertised by the brand · Tetrahexyldecyl ascorbate, Glycyrrhiza glabra root extract
Works well

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

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: 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.

Tetrahexyldecyl ascorbateKey activeEffect: HighBeing a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.~4.9–7.3%
Glycyrrhiza glabra root extractEffect: LowA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals~0.55–1.3%
Moisturizing
Not advertised by the brand · Coco-caprylate/caprate, Caprylic/capric triglyceride + 5 more
Works

This product can help soften the skin and reduce its moisture loss with emollients and occlusives: caprylic/capric triglyceride, glycine soja oil.

Keep in mind that this product does not contain effective ingredients to attract water to the upper layer of the skin. This is why an additional product with humectants like glycerin or hyaluronic acid can be helpful (apply it before this product for the best results).

Coco-caprylate/caprateKey active· EmollientEffect: MediumHelps to soften the upper layer of the skin without creating a greasy texture~5.1–7.7%
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~4.5–6.7%
Brassica campestris seed oilKey activeEffect: MediumHelps soften the upper layer of the skin~0.95–1.4%
Althaea officinalis root extractKey activeEffect: HighA plant extract that can help attract water to the upper layer of the skin and might help to reduce inflammation~0.2–0.75%
Glycine soja oilKey active· EmollientEffect: HighA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.~0.15–0.65%
Neopentyl glycol diheptanoate· EmollientEffect: LowHelps soften the upper layer of the skin and create a nice product consistency~2.7–4.1%
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~0.1–0.45%

Can it cause trouble?

Irritancy
7 flagged ingredients
Low risk
We flag 7 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.
IngredientFunctionIrritationEst. amount
Althaea officinalis root extractA plant extract that can help attract water to the upper layer of the skin and might help to reduce inflammationHigh~0.2–0.75%est.
Isoamyl laurateHelps stabilize emulsions and create a nice product textureMedium~22–33%est.
Tetrahexyldecyl ascorbateBeing a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.Medium~4.9–7.3%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~4.5–6.7%est.
Glycyrrhiza glabra root extractA plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicalsMedium~0.55–1.3%est.
Polyglyceryl-3 diisostearateHelps oil and water mix togetherMedium~0.4–0.9%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.Medium~0.15–0.65%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 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
Polyglyceryl-3 diisostearateHelps oil and water mix together3/5~0.4–0.9%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.2/5~0.15–0.65%est.
Alternatives
The closest match we found
Vita-C Corrector
African Botanics Vita-C Corrector
Closest match56% match
$140.00
View all alternatives

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Ingredients

Filter by role to see what each ingredient is doing.

Isoamyl laurate~22–33%
Irritant · medium
Irritation risk
Medium

Helps stabilize emulsions and create a nice product texture

More about Isoamyl laurate
Coco-caprylate/caprate~5.1–7.7%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps to soften the upper layer of the skin without creating a greasy texture

More about Coco-caprylate/caprate
Tetrahexyldecyl ascorbate~4.9–7.3%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Anti-agingAnti-oxidationEvens skin tone

Being a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.

More about Tetrahexyldecyl ascorbate
Caprylic/capric triglyceride~4.5–6.7%
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
Castor oil/ipdi copolymer~3.6–5.3%
Formula
Irritation risk
Low

Helps improve the product texture

More about Castor oil/ipdi copolymer
Neopentyl glycol diheptanoate~2.7–4.1%
Formula
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin and create a nice product consistency

More about Neopentyl glycol diheptanoate
C13-15 alkane~1.8–2.7%
Formula
Irritation risk
Low

Helps dissolve other ingredients in the formula

More about C13-15 alkane
Polyglyceryl-6 oleate~1.3–1.9%
Formula
Irritation risk
Low
Works for
Cleansing
More about Polyglyceryl-6 oleate
Brassica campestris seed oil~0.95–1.4%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Brassica campestris seed oil
Glycyrrhiza glabra root extract~0.55–1.3%
Irritant · medium
Irritation risk
Medium
Works for
Reduces rednessEvens skin toneAnti-oxidationAnti-inflammatoryAntibacterial

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
Polyglyceryl-3 diisostearate~0.4–0.9%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Cleansing

Helps oil and water mix together

More about Polyglyceryl-3 diisostearate
Althaea officinalis root extract~0.2–0.75%
Key activeIrritant · high
Irritation risk
High
Works for
MoisturizingAnti-oxidation

A plant extract that can help attract water to the upper layer of the skin and might help to reduce inflammation

More about Althaea officinalis root extract
Oryza sativa bran extract~0.15–0.55%
Formula
Irritation risk
Low

Used to thicken the product consistency

More about Oryza sativa bran extract
Tocopherol~0.1–0.45%
Under-dosed
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
Glycine soja oil~0.15–0.65%
Key activeComedogenic 2/5Irritant · medium
Irritation risk
Medium
Comedogenicity
2/5
Works for
Moisturizing

A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.

More about Glycine soja oil
Ingredient list view

Isoamyl laurate, Coco-caprylate/caprate, Tetrahexyldecyl ascorbate, Caprylic/capric triglyceride, Castor oil/ipdi copolymer, Neopentyl glycol diheptanoate, C13-15 alkane, Polyglyceryl-6 oleate, Brassica campestris seed oil, Glycyrrhiza glabra root extract, Polyglyceryl-3 diisostearate, Althaea officinalis root extract, Oryza sativa bran extract, Tocopherol, Glycine soja oil

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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
Common Heir10% Vitamin C SerumYOUR PRODUCTAfrican BotanicsVita-C CorrectorSKKN by KimOil Dropsabout-face essentialsc-boost
Match—56%54%53%
Price—$140.00—$50.00
Shared key ingredients—2 of 43 of 42 of 4
Key difference—Cannabis Sativa Seed OilApricot Kernel OilCollagen Amino Acids
Irritancy Low Low Low Low
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 5 studies and safety reviews.

  1. 1
    Safety Assessment of Alkyl Esters as Used in Cosmeticscir-safety.org
  2. 2
    Double-blind, half-face study comparing topical vitamin C and vehicle for rejuvenation of photodamagencbi.nlm.nih.gov
  3. 3
    Application of tetra-isopalmitoyl ascorbic acid in cosmetic formulations: Stability studies and in vivo efficacysciencedirect.com
  4. 4
    Vitamin E in dermatologyncbi.nlm.nih.gov
  5. 5
    Vitamin E and Skin Healthlpi.oregonstate.edu
Common Heir 10% Vitamin C Serum
Common Heir10% Vitamin C Serum
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