If you've spent any time in the nail industry, you've probably heard HEMA mentioned - often in the context of allergies. But what actually is it, and what does it mean for you and your clients?
What Is HEMA?
HEMA (hydroxyethyl methacrylate) is a liquid monomer used in a wide range of professional nail products, including gel polishes, builder gels and acrylics. It acts as a binding agent, helping the product stick to the nail and creating a flexible, chip-resistant finish once cured under UV or LED light.
Not All HEMA Is the Same
Quality matters more than most people realise. High-quality HEMA bonds properly during curing, leaving little to no free monomers behind. Lower-quality HEMA may not fully bond - and when that happens, uncured monomers can come into contact with the nail plate and surrounding skin, which over time can lead to sensitisation and allergic reactions.
At Bio Sculpture, we only use high-quality, certified ingredients that are independently tested for both performance and safety. For over 37 years we have formulated Hema and Hema free options, because every nail tech should have the choice. Our Hema free formulas are not trend led, and are guaranteed to have the same or better longevity as our Hema options.
Recognising a HEMA Allergy
Symptoms can vary, but common signs include:
- Redness, itching or a rash around the nails, cuticles or fingers
- Blistering, swelling or persistent irritation, particularly after repeated gel sessions
- In more severe cases, symptoms can spread - affecting the face or other parts of the body
If a client is experiencing any of these, it's worth pausing treatments and seeking advice before continuing.
If a client is experiencing any kind of reaction, or if you have questions about ingredients, formulation, or how to protect yourself and your clients going forward, please reach out to us.
Or call us on 03333 111 555
Is Di-HEMA the Same Thing?
No - and this is a common point of confusion. Di-HEMA has a much larger molecular size than HEMA, which means it's far less likely to penetrate the skin or nail plate. It is not a known allergen, so the two shouldn't be treated as interchangeable.
Prefer HEMA-Free?
If you or your clients would rather avoid HEMA altogether - whether due to a confirmed allergy or simply as a precaution - we have over 320 HEMA-free products available. You can browse the full range here.
