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Retinol is a form of vitamin A studied in cosmetics for fine lines and skin texture34. Since Regulation (EU) 2024/996, it is limited to 0.3% retinol equivalent in most products and to 0.05% in body lotions, with a mandatory label statement2. It degrades mostly in light8.
Entry from our cosmetic ingredient glossary. Regulatory data from the European Commission's CosIng database1 and from Regulation (EU) 2024/9962. Copy the identifiers in one click for your files.
Each result shows the protocol and the level of evidence. The higher the level, the better the result carries over to a finished formula.
Retinol reduces wrinkle surface and hyperpigmentation, with no significant difference from bakuchiol. Retinol users report more peeling and tingling. The concentration tested is above the current European limit4.
Epidermal thickness increases with concentration. At 0.3% and 1%, keratinocyte proliferation and fibrillin microfibril deposition are comparable, with no sign of local inflammation. With gradual daily use, 0.3% causes fewer and milder adverse effects than 1%5.
Retinol is deposited in the skin model and converted there into retinoic acid, which retinyl palmitate did not do. The measured conversion is low: 0.68 µM after 2 hours9.
Fine lines score down by 1.64 points with retinol versus 0.08 with the vehicle (p < 0.001). Expression of glycosaminoglycans and procollagen I increases in biopsies from a subgroup. Concentration above the current European limits3.
Retinoids are among the 23 ingredients recommended by the panel, notably for fine lines, brown spots, enlarged pores and oily skin. The abstract refers to the retinoid class, without singling out retinol10.
Retinol and retinal are markedly less irritating than tretinoin and tazarotene, at the price of a more modest efficacy for retinol; retinal appears to be the most effective of the cosmetic retinoids67.
Retinoids lose 0 to 80% of their content in 6 months at 25 °C, and 40 to 100% at 40 °C. Light degrades more than heat. Stability depends on the formula, and some products contain less than the declared amount8.
This page summarizes published literature on a cosmetic ingredient. It does not describe the effect of a finished product, which depends on its formula, and it is not medical advice. Several of the clinical trials cited were run or funded by cosmetics companies; this is indicated in the sources. Several trials tested concentrations above the current European limit: this is stated in each result.
The colored zone marks the European limits: 0.05% RE in body lotions and 0.3% RE in other products. Earlier trials tested 0.4%, 0.5% and 1%, above these limits. The final concentration of a formula is set with the formulator, within the framework of Regulation (EU) 2024/996.
Our white label catalog includes 2 formulas with retinol: the key active in 2 of them, a supporting ingredient in the others. Every category can be customized (formula, fragrance, packaging).
Key active in the encapsulated retinol serum and the night cream, two catalog formulas to customize within the limits of the European regulation.
Four actives often compared when choosing the hero of a range. They do not exclude each other and are often combined in the same routine.
| Retinol | Niacinamide | Vitamin C | Hyaluronic acid | |
|---|---|---|---|---|
| Main role | Skin texture, fine lines | Barrier, skin tone, shine | Radiance, antioxidant protection | Surface hydration |
| When | Often in the evening | Morning and evening | Often in the morning | Morning and evening |
| In the formula | Degrades mostly in light, up to 80% loss in 6 months in commercial products8 | Stable, easy to formulate in the water phase | Oxidizes with air and light, needs protective packaging | Stable, molecular weight changes the feel |
| EU regulation | Limited to 0.3% RE, 0.05% RE in body lotion, mandatory statement2 | No restriction | No restriction for ascorbic acid | No restriction |
| Who it suits | Experienced users, gradual introduction | General public, sensitive skin included | Dull skin | All skin types |
Peer-reviewed studies and official regulatory sources, checked on November 2, 2026.
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