The 6 Acids You Need in Your Skin Care Routine

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Acids are a cure-all of sorts, but the key to getting good results is to find one that’s compatible with your skin. These are some of the most tried-and-true acids, which come in both over-the-counter strengths and stronger concentrations for in-office procedures, like chemical peels.

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If your skin is rough and sun-damaged, opt for glycolic acid.

Part of the alphahydroxy acids (AHAs) family—water-soluble, naturally derived exfoliating agents—glycolic acid is the smallest molecule of all the acids, so it can deeply penetrate skin. “Glycolic acid is the old standby for freshening the skin,” says Beverly Hills, CA, dermatologist Rhonda Rand, MD. “It accelerates cell turnover and helps stimulate new collagen and elastin production.” An excellent exfoliator, the acid lifts away the outer layer of dead skin cells to help soften lines, wrinkles and scars and allow for the growth of new skin.


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If you want to stimulate collagen, use retinoic acid.

When you’re serious about halting signs of aging on your face, retinoic acid is the one you want to reach for. Derived from vitamin A, retinoic acid removes the top layer of dead skin to reveal new, healthy skin underneath (it can also be used to treat acne because of its exfoliating abilities). “When retinoic acid is applied to skin, it stimulates collagen synthesis, normalizes cell maturation and thins the dead, outer protective layer of the stratum corneum,” says Chicago dermatologist Quenby Erickson, MD.


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If your skin needs plumping, give hyaluronic acid a try.

Naturally found in the body, hyaluronic acid is responsible for creating plump, dewy, hydrated skin. Skin care products that contain the acid work to moisturize the skin and give it a plumper look, but when it comes to filling in lines and wrinkles, an injectable form of the acid needs to be used. “Hyaluronic acid is one of my favorite acids to use because it attracts water to and in between the cells, giving a fullness to the skin while also preserving moisture,” says celebrity aesthetician Kat Rudu.


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If your skin is dehydrated, treat it with oleic acid.

Super hydrating and the antidote for parched, dry skin, oleic acid is a naturally occurring fatty acid found in many natural oils that is beneficial in providing moisture and relief to seriously dehydrated skin. “Oleic acid is incredibly moisturizing and regenerative to the skin and has amazing anti-inflammatory properties,” says Rudu. “The oleic acid found in olive oil mimics the skin’s natural sebum, so it is compatible with the skin and will not clog pores or cause breakouts.”


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If your skin looks dull, lactic acid may be the answer.

Like glycolic acid, lactic acid is also an AHA. But, it differs in that it tends to be more mild, although it works toward the same goal. “It’s a great choice for more sensitive skin or drier skin because it’s gentler,” says aesthetician Alexandra Wagner, adding that it also helps somewhat with hyperpigmentation. Sourced from fruits, vegetables and even milk, lactic acid works to hydrate and brighten skin, too. “It aids in evening out the skin and getting rid of any dead skin on the surface for a smoother, brighter look."


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If you experience breakouts, clear them up with salicylic acid.

An anti-inflammatory acid, the reason why salicylic acid works so well on oily and acneic skin is because it breaks up what’s clogging the pores, helping to limit the incidence of blackheads and whiteheads. Available as chemical peels, at-home acne products and spot-treatments, the concentrations of salicylic acid range. Keep in mind that salicylic acid can be drying, so if your skin is prone to flakiness, it’s best to use it in conjunction with a moisturizer that is light and noncomedogenic.


1 Comment
  • Jennifer M
    Posted on

    Nice article. I'm 49 and these are some areas of interest to me as I seem to be aging rapidly these days. I just wish this article would've provided a few examples of good products to try in each acid category.

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