Getting your nails done occasionally poses minimal health risks for most people, but there are real concerns worth knowing about. The chemicals in nail products, UV light used to cure gel polish, physical damage to the nail plate, and salon hygiene practices all factor into the equation. The risks increase with frequency, and they affect nail salon workers far more than customers who visit once or twice a month.
Chemicals in Nail Products
Nail polishes, acrylics, and gels contain a range of chemicals that have well-documented health effects. Three ingredients in particular have drawn the most scrutiny: formaldehyde (a known carcinogen), toluene, and dibutyl phthalate (DBP). California’s Department of Toxic Substances Control has linked exposure to these chemicals with cancer, birth defects, asthma, and other chronic conditions. Toluene and DBP are classified as developmental toxins, meaning they can interfere with fetal development.
Many brands now market themselves as “3-free,” “5-free,” or even “10-free,” meaning they’ve removed some of these ingredients. That’s a meaningful improvement, but nail products still release volatile organic compounds (VOCs) that can irritate your eyes, nose, throat, and skin. A CDC-affiliated pilot study of Michigan nail salons found that methyl methacrylate, a chemical banned from pure use in salons since the 1970s, was still detected in the air of 15 out of 17 salons tested. Concentrations varied enormously, and some salons had notably poor ventilation.
For a customer sitting in a salon for 30 to 60 minutes, the exposure is brief. For technicians working eight-hour shifts five days a week, the cumulative exposure is a genuine occupational health concern. If you notice strong chemical odors, headaches, or eye irritation during your appointment, that’s a sign the salon’s ventilation is inadequate.
UV Lamps and Skin Damage
Gel manicures require curing under UV or LED lamps, and these lamps emit UVA radiation at least four times stronger than normal sunlight. That intensity sounds alarming, but the exposure time matters. Your hands sit under the lamp for only a few minutes per session, while sunlight hits your skin for hours on a typical day outdoors.
A 2014 study found that it would take multiple salon visits to accumulate enough UV exposure to cause DNA damage in skin cells. A more recent 2023 study did find that radiation from UV nail lamps could cause DNA damage and genetic mutations, but researchers at MD Anderson Cancer Center note that this work wasn’t performed on human skin, which limits how directly the results apply to real-world manicure conditions.
The risk is low for any single appointment, but it’s not zero, and it accumulates over years of regular gel manicures. Two simple precautions can essentially eliminate the concern. Applying SPF 50 or higher sunscreen to your hands before your appointment protects the exposed skin. Inexpensive UV-blocking fingerless gloves, which leave only the nails exposed, are another option that dermatologists at Moffitt Cancer Center recommend.
Physical Damage to Your Nails
The products themselves aren’t the only issue. The process of applying and removing acrylics, gels, and dip powder can physically weaken your natural nails over time. Acrylic and gel overlays bond tightly to the nail plate, and improper removal is where most of the damage happens.
Every time a nail extension is picked off, pulled off, or bitten off, two to three layers of the natural nail plate come with it. That can remove half the nail’s thickness in one go. Even salon removal using acetone soaks and filing can thin the nail if done aggressively. The result is nails that feel papery, bend easily, and split or peel.
If extensions are removed properly, with patience and gentle technique, the weakness is temporary. Your nails grow out fully in about three to six months, depending on how fast they grow. But if you continuously layer new acrylics or gels over damaged nails without giving them a break, the thinning compounds. Taking periodic breaks between sets, even just a few weeks, gives the nail plate a chance to recover.
Allergic Reactions to Acrylates
Acrylates are the chemical building blocks of gel polish, acrylic nails, and many nail adhesives. They were named Contact Allergen of the Year in 2012 by the American Contact Dermatitis Society because of how widespread they’ve become. You can develop an acrylate allergy at any point, even after years of getting your nails done without problems.
The classic reaction is contact dermatitis: itching, burning, scaling, hives, or blistering on the fingers and hands. But it doesn’t always stay local. Touching your face with residual acrylate on your fingers can trigger eczema on your eyelids, cheeks, or neck. Acrylate particles can also become airborne during filing, potentially causing facial swelling, hay fever-like symptoms, or asthma in sensitive individuals.
If you notice persistent itching or redness around your cuticles or fingertips after a manicure, an acrylate allergy is worth considering. Once sensitized, you’ll react every time you’re exposed, and the reaction tends to get worse with repeated contact rather than better.
Salon Hygiene and Infection Risk
A well-run salon follows strict sanitation protocols. State regulations typically require that all reusable tools be cleaned of visible debris, then fully immersed in hospital-grade disinfectant for at least ten minutes to kill viruses, bacteria, and fungi. Items that can’t be properly disinfected, like emery boards, buffing blocks, pumice stones, and wooden cuticle pushers, are supposed to be single-use and thrown away after each client.
Pedicure basins with jets or whirlpool functions require cleaning and disinfection between every client. Drill bits must be soaked in acetone to remove product buildup, scrubbed, and then soaked in disinfectant for the full recommended contact time. These rules exist because nail services can break the skin, creating a pathway for bacterial and fungal infections.
The reality is that not every salon follows these protocols carefully, and customers rarely see the cleaning process. A few things you can look for: tools should come from a sealed pouch or a disinfectant container, not a drawer. Fresh files and buffers should be opened in front of you. The pedicure basin should be visibly clean and dry before being filled. If a salon cuts corners on sanitation, the risk of picking up a bacterial or fungal nail infection goes up considerably.
How to Reduce the Risks
None of this means you need to stop getting manicures entirely. The risks are manageable with a few practical choices:
- Choose well-ventilated salons. If the chemical smell is overwhelming when you walk in, the air exchange is inadequate.
- Apply SPF 50 sunscreen or wear UV-blocking gloves before gel curing to protect the skin on your hands.
- Don’t pick or peel off gel or acrylic nails. Proper removal, even if it takes longer, preserves far more of your natural nail.
- Take breaks between sets. A few weeks with bare nails between acrylic or gel applications lets your nails recover thickness and strength.
- Watch for allergic reactions. Persistent itching or redness around the nails after appointments is a sign to stop and get evaluated.
- Check sanitation practices. Tools should be visibly disinfected, single-use items should be fresh, and pedicure basins should be cleaned between clients.
Regular polish manicures carry the fewest risks overall, since they skip both the UV lamp and the aggressive removal process. If you prefer gel or acrylics, spacing out your appointments and choosing a salon that follows proper hygiene and removal techniques makes a meaningful difference in how your nails hold up over time.