Retinyl Acetate

Tolerability and safety

Irritation potential

Medium

Allergen risk

Low

Pregnancy

Avoid

Suitable for

Oily, Dry, Combination, Normal

Use with caution

Sensitive

About this ingredient

Retinyl acetate (Vitamin A acetate) is an ester of retinol with acetic acid. A weak retinoid form: to produce an effect on skin it must undergo two-step conversion – first the acetate group is cleaved to form retinol, then retinol is oxidized to retinal and on to retinoic acid. Concentration drops at each step. Where applied. Mid-range anti-aging creams (0.1-1%), mature-skin products, night serums. Often marketed as a 'mild retinol' for beginners, in reality efficacy is substantially lower than retinol, and far below tretinoin. In Spain seen in Babé, RoC, parts of ISDIN and Sesderma lines. Evidence base. Few direct RCTs of retinyl acetate for photoaging. By analogy with retinyl palmitate, efficacy is graded weak (Sorg 2014). For a patient with a clear anti-aging goal, retinol 0.3-1%, retinaldehyde, or prescription tretinoin works better. Safety. CIR confirmed safety at cosmetic concentrations. Irritation is weaker than with retinol; flaking and dryness occur at higher concentrations, especially on dry and sensitive skin. Systemic vitamin A controversy. High oral doses of vitamin A as retinyl acetate (>10,000 IU daily long-term) are teratogenic. Topical cosmetic use delivers doses orders of magnitude lower than systemic. Even so, regulators (SCCS Opinion 2016) recommend capping total cosmetic retinoid dose (including retinyl acetate, retinyl palmitate, retinol) at 0.3% in face products. Pregnancy – avoid. By EMA and FDA consensus, no retinoids (including topical esters) during pregnancy. For anti-aging in pregnancy: bakuchiol, azelaic acid, vitamin C, peptides.

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