This prescription strength retinoic acid is cleared by the FDA as an anti-aging treatment as well as an acne treatment. Retinoic acid encourages cellular turnover, reduces fine lines and wrinkles, increases firmness, and prevents/clears acne. Use during your evening skincare routine. Slight irritation may occur with initial use, therefore it is suggested to start with the .05%. It is recommended to use every third night and slowly increase to every night when skin becomes acclimated.