Acrylates (Methacrylates)

What are acrylates?

Acrylates and methacrylates are synthetic polymers used in a wide range of products, from paints and adhesives to dentistry and cosmetics. In personal care, they are most commonly found in gel nails (UV-cured or LED-cured) and acrylic nail extensions. Ingredients such as HEMA (2-hydroxyethyl methacrylate) and di-HEMA trimethylhexyl dicarbamate are frequent culprits.

Unlike traditional nail polish, which dries by solvent evaporation, gel and acrylic systems cure (harden) through a chemical reaction — often triggered by UV or LED light. This creates a durable, chip-resistant finish that lasts weeks. The same chemistry that provides durability also means uncured or partially cured monomer can penetrate the nail plate and skin, leading to sensitisation and allergic contact dermatitis.

Why do acrylates cause reactions?

Acrylates are potent contact allergens. They can sensitise the skin through:

1. Incomplete curing — If the gel is not fully cured under the lamp, residual monomer remains and can penetrate the nail bed or surrounding skin.
2. Prolonged contact — Nail technicians and frequent users have repeated, sustained exposure, increasing the risk of developing allergy.
3. Hand-to-face transfer — Touching the face, eyes, or neck with polished nails (before or after curing) can cause dermatitis in those areas, even when the nails themselves look fine.
4. Cumulative exposure — Allergy often develops after months or years of use. Once sensitised, even small amounts can trigger reactions.

Gel nail popularity has exploded in recent years — especially in India with brands like Nykaa, salon culture, and at-home gel kits. Dermatologists report a sharp rise in acrylate-related patch test positives, making this one of the fastest-growing cosmetic allergens.

In Indian products 🇮🇳

Gel nails and acrylic manicures are increasingly common across urban India. Nykaa, MyGlamm, and other beauty platforms sell gel polish kits and UV lamps for home use. Salons offer gel manicures and acrylic extensions at various price points. This has made acrylates a growing concern in Indian patch test clinics. Anyone with unexplained nail or eyelid dermatitis — especially if they use gel or acrylic nails — should consider acrylate allergy and request patch testing to the acrylate series.

How to avoid acrylates

1. Limit gel and acrylic use — The most reliable way to avoid acrylate allergy is to avoid gel and acrylic nail products. Traditional nail polish that dries by evaporation generally does not contain the same acrylate monomers.
2. Choose "5-free" or "10-free" conventional polish — These formulations avoid certain allergens but may still contain acrylates in some cases. Read labels carefully.
3. Minimise uncured product contact — If you must use gel, ensure full curing under the lamp, avoid skin contact with uncured product, and wash hands immediately after application.
4. Avoid touching face with nails — Reduce hand-to-face transfer by being conscious of where your hands go, especially around the eyes.
5. Patch test if symptomatic — A dermatologist can test you to the acrylate series (HEMA, di-HEMA, etc.) to confirm allergy and guide avoidance.

Safer alternatives

• Traditional nail polish — Solvent-based polish that dries by evaporation typically does not contain the same acrylate monomers. It chips more easily but is much less likely to cause acrylate allergy.
• Press-on nails — Some use different adhesives; check ingredients, as some may still contain acrylates.
• Nail art without gel — Stickers, wraps, or regular polish designs avoid prolonged gel/acrylic exposure.
• Going natural — Buffing and cuticle care without extensions or gel can be a safe option for those who are sensitised.

Acrylates are now among the most important cosmetic allergens to consider when evaluating nail and facial dermatitis. If you suspect you are allergic, see a dermatologist for patch testing and personalised advice.