Alpha hydroxy acids (AHAs) are acids derived from fruits and are used in skincare products for their value in encouraging cell turnover and making the skin feel smooth. Look for labeling such as glycolic, citric, lactic, malic or tartaric acids, all of which are forms of AHAs. These acids have been approved by the U.S. Food and Drug Administration for the treatment of a variety of skin conditions.
Acne Treatment
When applied to the skin, AHAs bind to the skin and help to dissolve the bonds that hold dead skin cells to healthy skin. When this occurs, dead skin can be sloughed off, revealing younger-looking skin underneath. Because acne occurs as the result of oil, dirt and dead-skin buildup in the pores, the exfoliating properties associated with this can reduce skin oils, as well as impurities and blackheads.
Reduce Rosacea Symptoms
AHAs like lactic acid may be beneficial in reducing the signs of rosacea, particularly of the extreme redness and tiny bumps that can accompany the condition. Lactic acid is a milder form of AHA derived from sour milk and is known for its abilities to penetrate the rough textured skin that can accompany rosacea and hold water in to provide moisturizing benefits.
Lightening Dark Spots
Skin discolorations, such as dark spots, are a natural occurrence that comes with aging. AHAs, such as citric acid, can help to lighten skin discolorations with frequent applications, according to DERMADoctor.com. The discolorations, such as age spots, occur because the dead skin that accumulates on the face give the skin an aged or darkened appearance. When applied to the skin, AHAs are able to release the bonds of dead skin cells that may contain excess amounts of melanin, a pigment that gives dark spots their color. This reveals younger skin underneath that is not as damaged by excess melanin production.
Reducing Wrinkles
AHAs, particularly glycolic acid, can stimulate collagen and elastin fiber production, which helps to even out fine lines and wrinkles. These fibers give strength to the skin, as well as help it maintain its elastic properties. When skin loses its elastin and collagen, it may appear sagging or sallow. As a person ages, collagen and elastin production slow. Therefore, AHAs work to stimuate this production in order to make the skin appear more youthful.
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