Gentle yet effective, lactic acid is a beloved alpha hydroxy acid that smooths and brightens while helping skin hold on to moisture. Lactic acid skincare shows up in soft resurfacing cleansers, toners, serums, peels, body lotions, and creams, making it a lovely choice for dry or sensitive complexions that want a subtle glow. Use it a few evenings each week, follow with sunscreen by day, and enjoy skin that looks refined, luminous, and supple.