PRODUCT REVIEW
Stila One Step Prime
Can it cause trouble?
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Price as of 2/11/2023 7:35 GMT.
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What can the product work for?
Works for
Anti-aging
What does the product description say?
The formula combines a crystal clear base with a cocktail of skin-conditioning silicones, which helps to reduce the appearance of fine lines and enlarged pores.
lysine
0.25% -
0.45%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
tetrahexyldecyl ascorbate
0.25% -
0.5%
Irritation risk:
Concentration: Insufficient!
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.
retinyl palmitate
0.25% -
0.4%
Irritation risk:
Concentration: Insufficient!
Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect
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Moisturizing
glyceryl acrylate/acrylic acid copolymer
0.3% -
0.55%
Irritation risk:
Concentration: Effectiveness: HIGH
Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency
glycerin
2.5% -
3.1%
Irritation risk:
Concentration: Effectiveness: HIGH
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
dimethicone
1.3% -
1.6%
Irritation risk:
Concentration: Effectiveness: HIGH
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
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Anti-oxidation
ginkgo biloba leaf extract
0.25% -
0.4%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A plant extract that might help neutralize free radicals and reduce inflammation in skin. It can be irritating
tetrahexyldecyl ascorbate
0.25% -
0.5%
Irritation risk:
Concentration: Insufficient!
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
0.25% -
0.5%
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
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Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging |
Total Promises Fulfilled score:
75/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
retinyl palmitate
0.25% -
0.4%
Irritation risk:
Works for:
Anti-blemish,
Evens skin tone,
Anti-aging,
Exfoliation
Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect
chamomilla recutita flower extract
0.25% -
0.45%
Irritation risk:
Works for:
Anti-inflammatory
Plant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritating
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Comodogenic ingredients
No comodogenic ingredients detected
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40%
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32%
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| Key ingredients |
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| Irritancy | IRRITANCY
MEDIUM
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MEDIUM
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MEDIUM
| IRRITANCY
LOW
| IRRITANCY
LOW
| IRRITANCY
LOW
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LOW
| IRRITANCY
LOW
| IRRITANCY
MEDIUM
| IRRITANCY
LOW
| IRRITANCY
LOW
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Ingredients & concentrations
All ingredients
Key Actives
camellia sinensis leaf extract
0.25% -
0.5%
Irritation risk:
Works for:
Anti-oxidation,
Antibacterial,
Anti-aging,
Anti-blemish,
Evens skin tone,
Moisturizing
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
tocopherol
0.25% -
0.5%
Irritation risk:
Works for:
Anti-oxidation,
Anti-aging,
Moisturizing,
Anti-inflammatory
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
Show more
Potential irritants
retinyl palmitate
0.25% -
0.4%
Irritation risk:
Works for:
Anti-blemish,
Evens skin tone,
Anti-aging,
Exfoliation
Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect
chamomilla recutita flower extract
0.25% -
0.45%
Irritation risk:
Works for:
Anti-inflammatory
Plant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritating
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
cyclopentasiloxane
6% -
7.3%
Irritation risk:
Works for:
Mattifying,
Moisturizing
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
butylene glycol
4.3% -
5.2%
Irritation risk:
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
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Ingredient list view
Water, Cyclopentasiloxane, Butylene glycol, Octyldodecyl neopentanoate, Glycerin, Phenoxyethanol, Peg/ppg-18/18 dimethicone, Carbomer, Dimethicone, Aluminum hydroxide, Sodium hydroxide, Caprylyl glycol, Titanium dioxide, Ci 77891, Sodium chloride, Sodium dehydroacetate, Disodium edta, Phytantriol, Hexylene glycol, Glyceryl acrylate/acrylic acid copolymer, Dextrin palmitate, Palmitic acid, Octyldodecanol, Stearic acid, Tetrahexyldecyl ascorbate, Tocopherol, Magnesium ascorbyl phosphate, Retinyl palmitate, Zinc oxide, Ci 77947, Lysine, Triethoxycaprylylsilane, Camellia sinensis leaf extract, Chamomilla recutita flower extract, Ginkgo biloba leaf extract, Panax ginseng root extract, Sodium hyaluronate, Magnesium chloride, Potassium chloride, Zinc chloride, Potassium sorbate, Montmorillonite, Illite, Kaolin
Sources
- Amended Safety Assessment of Alkyl Esters as Used in Cosmetics
- Glycerol and the skin: holistic approach to its origin and functions
- Dimethicone as a protective ingredient in topical medications
- Final Report on the Safety Assessment of Dimethicone Copolyol
- Safety Assessment of Alumina and Aluminum Hydroxide as Used in Cosmetics
- 4 Final Report on the Safety Assessment of Sodium Dehydroacetate and Dehydroacetic Acid
- Safety Assessment of Polysaccharide Gums as Used in Cosmetics
- 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
- Vitamin E in dermatology
- Vitamin E and Skin Health
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- Topical L-ascorbic acid: percutaneous absorption studies
- A review of inorganic UV filters zinc oxide and titanium dioxide
- Risk assessment of zinc oxide, a cosmetic ingredient used as a UV filter of sunscreens
- Characterization of the UVA protection provided by avobenzone, zinc oxide, and titanium dioxide in broad-spectrum sunscreen products
- Ultraviolet Protection Properties of Commercial Sunscreens and Sunscreens Containing Zno Nanorods
- ZnO nanoparticles and organic chemical UV-filters are equally well tolerated by human immune cells
- Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin
- Safety Assessment of Ginkgo biloba-Derived Ingredients as Used in Cosmetics
- Cosmeceutical Critique: Ginkgo Biloba
- Ginseng in Dermatology: A Review
- Antiaging effects of the mixture of Panax ginseng and Crataegus pinnatifida in human dermal fibroblasts and healthy human skin
- Hyaluronic acid: A key molecule in skin aging