ISDIN Night Peel is a professional-grade exfoliating serum that comes in 10 ampoules of 2ml each. This overnight treatment combines multiple acids to promote skin renewal, even skin tone, and improve texture while you sleep. The serum appears to contain a blend of exfoliating acids including glycolic acid (GA), alpha-hydroxy acids (AHA), and poly-hydroxy acids (PHA) based on the molecular structures shown on the packaging. The product comes in individual glass ampoules for precise dosing and optimal preservation of the active ingredients. As this is a professional exfoliating treatment, it should be used as directed and may not be suitable for sensitive skin or daily use.