Acids, including others from the AHA family, are known for their exfoliating powers, and lactic acid is no exception. "It gently smoothes to show smoother and more radiant skin," says Debra Jaliman, MD, a dermatologist in New York City and author of Skin Rules . Other benefits? Improved skin texture and hyperpigmentation, fewer breakouts and fewer visible lines and wrinkles, she says. (Related: The best acne products on Amazon under 25 USD)
With time, you may even notice tighter-looking skin, says Ava Shamban, MD, dermatologist in Beverly Hills and founder of SKINxFIVE. "Studies have shown that [lactic acid] can balance the pigment layer and stimulate collagen production," she says.
However, one key difference between lactic acid and other AHAs is the ability to increase the skin's moisture content ̵
Because of this, you'll often see it in lotions and creams." It's an excellent moisturizer that captures moisture and prevents water loss, "adds Dr. Akhavan.