PRODUCT REVIEW
SUNDAY RILEY C.E.O. 15% Vitamin C Brightening Serum Duo
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Product summary
What can the product work for?
Anti-aging
What does the product description say?
C.E.O. 15% Vitamin C Brightening Serum Duo 15% Vitamin C Brightening Serum Duo
tetrahexyldecyl ascorbate
7.8% -
9.6%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
glycolic acid
0.5% -
0.8%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
tocopherol
0.9% -
1.1%
Irritation risk:
Concentration: Insufficient!
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
Evens skin tone
What does the product description say?
C.E.O. 15% Vitamin C Brightening Serum Duo 15% Vitamin C Brightening Serum Duo
tetrahexyldecyl ascorbate
7.8% -
9.6%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
glycolic acid
0.5% -
0.8%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Moisturizing
What does the product description say?
It leaves skin looking hydrated and firm with less-visible dark spots and wrinkles over time.
jojoba esters
0.6% -
0.9%
Irritation risk:
Concentration: Effectiveness: HIGH
An emollient made of jojoba oil. Helps soften the skin and support its barrier function
saccharide isomerate
0.1% -
0.25%
Irritation risk:
Concentration: Effectiveness: HIGH
Helps attract water to the upper layer of the skin
acetamidoethoxyethanol
0.65% -
0.95%
Irritation risk:
Concentration: Effectiveness: HIGH
A new synthetic humectant that, according to the first tests, works better than glycerin in attracting moisture to the skin surface. It might be able to keep attracting water to the upper layer of the skin for longer compared with glycerin. Its texture is also nicer. Because of this, products with it are likely to be less sticky and more pleasant on application. It is unlikely to cause irritation and products with it work for sensitive skin. For best hydration results, it should be used at about 5-10% in a formulation. This ingredient is developed by a supplier Nouryon and is sold to skincare brands under the name Elfamoist AC.
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Exfoliation
glycolic acid
0.5% -
0.8%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Anti-oxidation
tetrahexyldecyl ascorbate
7.8% -
9.6%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
tocopherol
0.9% -
1.1%
Irritation risk:
Concentration: Insufficient!
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
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Evens skin tone | |
| Moisturizing |
Total Promises Fulfilled score:
91/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
citrus aurantium dulcis oil
2.1% -
2.6%
Irritation risk:
Used as a fragrance. It can be irritating and cause photosensitivity
citrus tangerina peel oil
1.9% -
2.3%
Irritation risk:
Essential oil that can be irritating. Can lead to photosensitivity
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Comodogenic ingredients
No comodogenic ingredients detected
User reviews (0)
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| Irritancy | IRRITANCY
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Ingredients & concentrations
All ingredients
Key Actives
tocopherol
0.9% -
1.1%
Irritation risk:
Works for:
Anti-oxidation,
Anti-inflammatory,
Anti-aging,
Moisturizing
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
glycolic acid
0.5% -
0.8%
Irritation risk:
Works for:
Anti-aging,
Exfoliation,
Evens skin tone,
Anti-blemish
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Show more
Potential irritants
citrus aurantium dulcis oil
2.1% -
2.6%
Irritation risk:
Used as a fragrance. It can be irritating and cause photosensitivity
citrus tangerina peel oil
1.9% -
2.3%
Irritation risk:
Essential oil that can be irritating. Can lead to photosensitivity
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
tetrahexyldecyl ascorbate
7.8% -
9.6%
Irritation risk:
Works for:
Anti-aging,
Anti-oxidation,
Evens 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.
squalane
4.3% -
5.2%
Irritation risk:
Works for:
Moisturizing
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
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Ingredient list view
Water, Tetrahexyldecyl ascorbate, Squalane, Polyglyceryl-6 distearate, Peg-8 beeswax, Citrus aurantium dulcis oil, Citrus tangerina peel oil, Glycine soja sterols, Ppg-12/smdi copolymer, Sodium phytate, Tocopherol, Phenoxyethanol, Acetamidoethoxyethanol, Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, Sodium acrylate/sodium acryloyldimethyl taurate copolymer, Jojoba esters, Glycolic acid, Caprylyl glycol, Cetyl alcohol, Polyglyceryl-3 beeswax, Chlorphenesin, Glycerin, Polysorbate 60, Sorbitan isostearate, Saccharide isomerate, Linalool, Limonene
Sources
- Double-blind, half-face study comparing topical vitamin C and vehicle for rejuvenation of photodamage
- Application of tetra-isopalmitoyl ascorbic acid in cosmetic formulations: Stability studies and in vivo efficacy
- Safety Assessment of Citrus-Derived Peel Oils as Used in Cosmetics
- Oxidized citrus oil (R-limonene): A frequent skin sensitizer in Europe
- Air oxidation increases skin irritation from fragrance terpenes
- Biological Activities and Safety of Citrus spp. Essential Oils
- Vitamin E in dermatology
- Vitamin E and Skin Health
- NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME (NICNAS) PUBLIC REPORT Acetamide, N-[2-(2-hydroxyethoxy)ethyl]- (INCI Name: Acetamidoethoxyethanol)
- ElfaMoist AC humectant (manufacturer's report)
- Photoprotective and antiinflammatory effects of topical glycolic acid
- Glycolic acid peel therapy – a current review
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics