Is Hair Removal Cream Safe? Dermatologists Explain What It Actually Does
Depilatory creams dissolve hair with chemicals rather than cutting it, and dermatologists say they are safe for most people — if the timing instructions are followed exactly.
Hair removal creams are safe for most people when used exactly as directed, two board-certified dermatologists told NBC News, but the same chemistry that makes them convenient can irritate skin if the product is left on too long.
The creams, also called depilatories, do not cut hair the way a razor does. "Hair removal creams contain chemicals such as calcium thioglycolate or potassium thioglycolate that break down keratin, which is the protein that gives hair its strength," said Dr. Kristina Collins, a board-certified dermatologist in Texas. "Once the hair shaft has weakened, it can be gently wiped away from the skin's surface."
Despite a common belief, the creams do not burn hair off. They break down its structure into a jelly-like substance that wipes away. The distinctive odor comes from the breaking of sulfur bonds in hair, which releases hydrogen sulfide, a compound that can smell like rotten eggs.
The burning sensation some users report generally comes from misuse. Creams should typically stay on the skin only five to 10 minutes, and users should follow the directions on their specific product. Left on longer, the same chemicals can begin breaking down keratin in the skin itself.
Results fall between shaving and waxing. "Unlike waxing, hair removal cream doesn't remove the root, so the effects don't last as long as that technique," said Dr. Mary Alice Mina, a board-certified dermatologist and host of The Skin Real podcast. But because the cream dissolves hair just below the surface rather than cutting it flush, Collins said, regrowth takes slightly longer than with a razor — usually three to seven days.
Concerns about absorption are largely unfounded, both dermatologists said. The active ingredients are formulated to sit on top of the skin and penetrate the upper hair shaft; very small amounts may reach the top layer of skin, but they do not enter the bloodstream.
Still, Collins cautioned that the products can irritate people with sensitive skin, eczema, rosacea or a compromised skin barrier. Both doctors recommend a patch test on a new product.
"You do this by applying a small amount to an inconspicuous area like your inner arm or thigh and wait 24 to 48 hours," Mina said. "If you get redness, burning, itching, or a rash, that cream isn't for you." For sensitive areas such as the bikini line, experts suggest testing on the inner wrist, where the skin is a closer match.
This article was produced with the assistance of artificial intelligence (AI), in accordance with our editorial policy.