Retinol and retinoids in cosmetics: forms, EU limits and how to read the label
Retinol, retinal, retinyl palmitate, hydroxypinacolone retinoate: how the vitamin A family appears on INCI lists, what EU rules limit, and what a label cannot tell you.
Updated: 31 October 2026 · Reviewed by: Kamil Pyziak
What “retinoids” means
Retinoids are vitamin A and related compounds. In cosmetics the word is used loosely for a family of ingredients that includes retinol itself and several derivatives. They are among the most discussed ingredients in products positioned for mature or uneven skin.
Strong retinoids such as tretinoin are medicines, not cosmetic ingredients, and are available on prescription. What you find in a cosmetic are milder forms permitted in cosmetic products.
How they appear on an INCI list
The most common names are Retinol, Retinal (retinaldehyde), Retinyl Palmitate, Retinyl Acetate and Retinyl Propionate, and Hydroxypinacolone Retinoate, a newer ester. The esters (palmitate, acetate) are generally regarded as gentler and weaker than retinol, while retinal is often described as closer to the active form in the skin. These comparisons are general; how a product behaves depends on concentration and formula.
Bakuchiol is often marketed as a “plant alternative to retinol”. Chemically it is not a retinoid; it is a different molecule from the Psoralea corylifolia plant.
EU limits for vitamin A
Following an opinion of the Scientific Committee on Consumer Safety on overall vitamin A exposure, the EU added retinol, retinyl acetate and retinyl palmitate to Annex III of the Cosmetics Regulation with maximum concentrations (expressed as retinol equivalent), different for body products and for face, hand and other products, plus a required warning about vitamin A intake. The rules apply in stages, with transition periods for products already on the market.
The exact limits and dates are listed in the restriction entry on each ingredient page in the “EU regulation” section. Other forms, such as retinal or hydroxypinacolone retinoate, are not covered by that entry, but they remain subject to the general requirement that a cosmetic must be safe.
Stability and packaging
Retinol is sensitive to light and air. Manufacturers protect it with opaque or airless packaging, antioxidants such as Tocopherol or BHT, and encapsulation. A tube or airless pump is generally a better sign than a clear jar, but packaging alone does not prove stability.
Products may also combine retinoids with soothing or moisturising ingredients, for example Niacinamide, Panthenol or Ceramide NP, to make the formula more comfortable.
Practical notes
Retinoids can cause dryness, redness or peeling, especially at the start. Brands usually advise using them in the evening, starting a few times a week, and using sun protection during the day, because retinoids can make skin more sensitive to the sun.
Avoid combining several strong actives at once if your skin reacts easily. During pregnancy or breastfeeding, or if you use prescription skin treatments, ask a doctor or pharmacist before using retinoid products.
What the label does not tell you
The INCI list shows which retinoid is present, but not how much. Some brands state a percentage on the packaging; that is a manufacturer claim, not something you can verify from the list. A position near the end of the list often means a low level, but below 1% the order is free, so this is only a hint.