HEMA

2-hydroxyethyl methacrylate (HEMA) and related compounds are important building blocks of artificial nail systems, either gel or acrylic (L&P).  When exposed to air or cured under the lamp, these monomers join together to form the hard, glossy and durable artificial nail surface in a process called polymerisation. 

Acrylate ingredients such as HEMA can cause allergic skin reactions in some people. These reactions don’t just happen around the nails—they can appear wherever uncured product touches the skin, including the face. The biggest risk comes from the liquid form of these chemicals before they harden. To stay safe, it’s important to avoid getting the product on the skin, use the correct lamp to fully cure gel nails, and make sure any leftover product is removed carefully.

Only professionals are allowed to use products containing HEMA and a similar ingredient called DI-HEMA trimethylhexyl dicarbamate.  Using products at home which are labelled as being for professionals only, or not following instructions carefully, can result in uncured material remaining on the skin, which can increase the risk of allergy. Acrylate allergies are life-long and may affect future medical or dental treatments, so it’s essential to always follow instructions closely and ask a nail professional if you’re unsure.