How Do Exfoliators Really Work?
While your skin naturally sheds dead skin cells, this process -- known as exfoliation -- may slow down with age. The resulting buildup of dead skin cells can leave your skin looking dull and lifeless. Luckily, the skin-brightening effects of exfoliators can help.
Many exfoliating products contain hydroxy acids, which are man-made versions of natural acids that come from sugar-containing fruits.1 Alpha hydroxy acids (AHAs), such as glycolic, citric, and lactic acids, dissolve the bonds of protein that hold the dead skin cells together, making it easier to remove them. 2
Beta hydroxy acids (BHAs), such as salicylic acid, are similar to AHAs in that they aid in the shedding process, but they can also enter the pores to help remove oil and dirt.3
By loosening and removing the top layer of dead skin cells, hydroxy acids can help stimulate new skin cell growth, resulting in skin that is smoother, softer, and more evenly colored. Because these acids can also make your skin more susceptible to sun damage, dermatologists recommend that you apply a broad-spectrum sunscreen with at least SPF 15 protection.4
As with any type of skin care, be careful not to overdo it. If you experience dryness or irritation, you are probably exfoliating too often. Once or twice a week should be enough to achieve smoother, more radiant skin
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