Oily, dry, combination -- regardless of your skin type, your skin grows drier as you age. According to Shamban, oil glands produce less oil as you get older. The result: visibly drier skin that begins to crack, which fosters wrinkles. To replenish your skin with much-needed moisture, Shamban recommends glycolic acid to slough off dry, flaky patches. "Glycolic acid is an alpha hydroxy acid derived from sugar cane that aids in exfoliating your skin," she says. Once applied, the molecules sink into your skin, allowing dead cells to shed and giving your skin a healthier, brighter appearance.

At home, you can safely boost your skin care regimen by applying super-hydrating coconut oil to severely dry areas and up your water intake to stay hydrated and nourish parched skin cells.