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 ...

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In general, skin toner balances the skin and removes leftover makeup and dirt your cleanser might not have washed off. When used regularly, it could actually reduce the size of your pores (make them ...

D espite the name, there is truly nothing “Ordinary” about the high-quality, low-cost products from this cult-favorite skincare brand. While HuffPost readers seem to buy the brand’s $10 Argireline ...

What is lactic acid? If you’ve ever tried to sprint as fast as you can at the end of a race or bang out a set of heavy squats in the gym, you’ve probably experienced an uncomfortable burning sensation ...

Lactic acid is an alpha hydroxy acid mostly derived from milk, but it can also be extracted from vegan sources like corn starch and other sugar-rich foods. However, most skincare products use ...