"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." We're here to tell you that lactic acid doesn't just cause sore muscles. In the skincare world, salicylic ...

When I first heard about using lactic acid for skin, I had a moment of confusion—isn't that what builds up in your muscles during a workout and causes soreness later? Turns out: more or less, yes! I ...

Fun fact: Cleopatra, the infamous last queen of Egypt, reportedly took daily baths in donkey milk to maintain her smooth, glowing skin. This might just seem like a crazy beauty hack used before things ...

When it comes to exercise and lactic acid, there are a lot of misconceptions. For example, many people blame lactic acid for delayed onset muscle soreness (DOMS)—the soreness you feel a couple of days ...

Whether it's the new phenomenon of maskne or a long-standing relationship with breakouts, acne is simply a part of many people's skin care lives, and that's okay. But if you do want to get rid of the ...

What is lactic acid? The terminology may be something you hear at the gym or associate with the dairy aisle at the grocery store, but did you know lactic acid can actually be applied into your beauty ...

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 ...

We truly believe in the supremacy of ingredients. A potent shot of an ingredient onto the skin could be a way to make your skin look healthier and glowing. Lately, chemical exfoliation has been on the ...

Runners and other athletes have long been told their muscles ache because they're full of lactic acid. But new research questions this locker-room wisdom. Scientists have discovered that lactic acid ...