"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 ...

Skin care can be an investment. When it comes to the products you're slathering all over your face, you want to ensure you're getting an efficacious formula that's suitable for your individual skin ...

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 ...

Organic acids, though, have carved out a curious exception. Chemicals such as glycolic acid, lactic acid, and salicylic acid ...

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We're here to tell you that lactic acid doesn't just cause sore muscles. In the skincare world, salicylic acid and glycolic acid rank among the best chemical exfoliation ingredients—but lactic acid is ...