"It’s our most requested product," Peach & Lily founder and CEO (and esthetician) Alicia Yoon tells me over Zoom. "We took our time with this since we wanted to deliver something that could be as ...

Lactic acid is an ingredient commonly present in cosmetic products. It is an antioxidant and chemical exfoliant. It helps remove dead skin cells, smooth rough areas, and moisturize the skin. Lactic ...

Exfoliating, plumping and hydrating, the best products will leave your skin glowing without costing a fortune The Guardian’s journalism is independent. We will earn a commission if you buy something ...

This article is a part of CNN Underscored’s Guide to Age-Defying Beauty, a weeklong focus on the essential products, tips and tricks to enhance your glow at any age. We’ll be featuring editor-tested ...

Made from the bacterial fermentation of sugar, lactic acid appears as an additive in vegan foods ranging from sourdough bread to soy sauce. This bacteria gives food its signature sour taste and acts ...