Lactic acid sounds like dairy but modern cosmetic lactic acid is fermented from plant sugars like corn and beet, not milk. Here is why the milk myth persists, where it really comes from, and how to use this gentle AHA.

Scrubs have long hidden crushed pearl, eggshell and silk, and even lactic acid raises questions. Here is how to verify an exfoliant is vegan, whether acids or scrubs suit you, and how often each body zone wants them.