Methacrylate chemicals can cause a severe, itchy rash anywhere on the body, not just the fingertips, says the British Association of Dermatologists.
It often occurs when gels and polishes are applied at home or by untrained technicians. Gel, acrylic and gel polish nails all contain methacrylates. A study suggests that at least 2.4% of people could be affected.
The results were based on allergy tests for the chemical on 4,931 patients attending 13 dermatology units in UK and Ireland in 2017.
Most patients developed their allergy through using nail enhancements, nail or eyelash glue - and a third were affected working as nail beauticians.
Dermatologists are urging the public to be wary of gel and gel polish home kits, and say they want to see more training for those who work in salons.
Allergic reactions can occur when the chemicals come into contact with any part of the skin, causing a rash anywhere on the body, including the eyelids, face, neck and genital region. Nails can also loosen and in very rare cases, breathing problems can occur. The allergy was found predominantly in women.
