PRODUCT REVIEW
Cos De BAHA RS Retinol 2.5 Serum
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Appears in
5 routines
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Product summary
What can the product work for?
Anti-aging
What does the product description say?
Reduces the appearance of fine lines, wrinkles and hyperpigmentaion.
niacinamide
3.5% -
5.2%
Irritation risk:
Concentration: Effectiveness: HIGH
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
retinol
5.5% -
8.2%
Irritation risk:
Concentration: Effectiveness: HIGH
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
camellia sinensis leaf extract
0.4% -
0.9%
Irritation risk:
Concentration: Insufficient!
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
Evens skin tone
What does the product description say?
Smoothens skin texture and improves uneven skin tone.
retinol
5.5% -
8.2%
Irritation risk:
Concentration: Effectiveness: HIGH
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
niacinamide
3.5% -
5.2%
Irritation risk:
Concentration: Effectiveness: HIGH
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
camellia sinensis leaf extract
0.4% -
0.9%
Irritation risk:
Concentration: Insufficient!
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
Exfoliation
retinol
5.5% -
8.2%
Irritation risk:
Concentration: Effectiveness: HIGH
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
Moisturizing
sodium hyaluronate
4.1% -
6.2%
Irritation risk:
Concentration: Effectiveness: HIGH
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
niacinamide
3.5% -
5.2%
Irritation risk:
Concentration: Effectiveness: HIGH
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
aloe barbadensis leaf extract
23% -
34%
Irritation risk:
Concentration: Effectiveness:
LOW
Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin
Show more
Anti-oxidation
retinol
5.5% -
8.2%
Irritation risk:
Concentration: Effectiveness: HIGH
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
tocopheryl acetate
1.2% -
1.7%
Irritation risk:
Concentration: Effectiveness:
LOW
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
artemisia vulgaris extract
0.1% -
0.45%
Irritation risk:
Concentration: Effectiveness:
LOW
A plant extract that might have some anti-inflammatory and anti-oxidant properties. It can be irritating
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Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Evens skin tone |
Total Promises Fulfilled score:
100/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
retinol
5.5% -
8.2%
Irritation risk:
Works for:
Evens skin tone,
Anti-aging,
Mattifying,
Exfoliation,
Anti-oxidation,
Anti-blemish
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
rosa damascena extract
0.9% -
1.35%
Irritation risk:
Oil of a very fragrant pink rose used as fragrance in cosmetics. Extensive research has shown it has mixed benefits. In the pro column, inhaling this flower’s scent seems to have relaxing properties and the plant’s petals contain skin-soothing and antioxidant compounds that can benefit skin. On the flipside, the numerous chemicals that create this rose’s distinctive fragrance pose a risk of causing skin aggravation.
Show more
Comodogenic ingredients
No comodogenic ingredients detected
User reviews (0)
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| Irritancy | IRRITANCY
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HIGH
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HIGH
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Ingredients & concentrations
All ingredients
Key Actives
niacinamide
3.5% -
5.2%
Irritation risk:
Works for:
Anti-blemish,
Evens skin tone,
Moisturizing,
Anti-aging,
Reduces irritation,
Reduces redness,
Anti-inflammatory,
Antibacterial
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
retinol
5.5% -
8.2%
Irritation risk:
Works for:
Evens skin tone,
Anti-aging,
Mattifying,
Exfoliation,
Anti-oxidation,
Anti-blemish
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
Show more
Potential irritants
retinol
5.5% -
8.2%
Irritation risk:
Works for:
Evens skin tone,
Anti-aging,
Mattifying,
Exfoliation,
Anti-oxidation,
Anti-blemish
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
rosa damascena extract
0.9% -
1.35%
Irritation risk:
Oil of a very fragrant pink rose used as fragrance in cosmetics. Extensive research has shown it has mixed benefits. In the pro column, inhaling this flower’s scent seems to have relaxing properties and the plant’s petals contain skin-soothing and antioxidant compounds that can benefit skin. On the flipside, the numerous chemicals that create this rose’s distinctive fragrance pose a risk of causing skin aggravation.
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
aloe barbadensis leaf extract
23% -
34%
Irritation risk:
Works for:
Moisturizing
Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin
retinol
5.5% -
8.2%
Irritation risk:
Works for:
Evens skin tone,
Anti-aging,
Mattifying,
Exfoliation,
Anti-oxidation,
Anti-blemish
Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating
sodium hyaluronate
4.1% -
6.2%
Irritation risk:
Works for:
Moisturizing
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Show more
Ingredient list view
Aloe barbadensis leaf extract, Retinol, Sodium hyaluronate, Niacinamide, 1,2-hexanediol, Polysorbate 20, Tocopheryl acetate, Rosa damascena extract, Lavandula angustifolia flower extract, Camellia sinensis leaf extract, Melissa officinalis leaf extract, Artemisia vulgaris extract, Disodium edta
Sources
- Retinoids in the treatment of skin aging: an overview of clinical efficacy and safety
- Improvement of naturally aged skin with vitamin A (retinol)
- A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Niacinamide - mechanisms of action and its topical use in dermatology
- Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x
- The influence of alkane chain length on the skin irritation potential of 1,2-alkanediols
- Evaluation of Skin Irritation and Acute and Subacute Oral Toxicity of Lavandula angustifolia Essential Oils in Rabbit and Mice