HEMA – what is it?
HEMA is an abbreviation for 2-hydroxyethyl methacrylate, a compound from the methacrylate group. Dermatological literature describes it as a low-viscosity, monofunctional methacrylate monomer that can cause sensitization, especially when uncured.
In the context of nail styling, the most important thing is that HEMA can be found in products such as gels and hybrids.
Why does HEMA arouse so much emotion?
Because it is one of the most frequently reported contact allergens related to (meth)acrylates used in the beauty industry. In practice, the problem is not that "just having HEMA in the composition" automatically causes harm, but that repeated skin contact with uncured product may lead to sensitization (allergic contact dermatitis).
Importantly, even after curing, a small amount of incompletely cured material may remain – that is why the working technique, curing time and the appropriate lamp are so important.
What are the symptoms of a HEMA allergy?
Most often it is allergic contact dermatitis in the area of the fingers and nail folds: redness, itching, swelling, blisters, oozing, burning.
If you or your client notice symptoms (especially recurring ones), discontinue exposure and consider a dermatologist consultation and patch testing. This post is for informational purposes only and does not replace medical advice.
Why you should avoid HEMA – 3 practical reasons
1) Because HEMA is a common cause of allergies related to nail styling
A study from Amsterdam UMC on HEMA patch testing (in the European baseline series) showed that approximately 3% of patients tested had a positive result, with nail cosmetics being the source of the allergy in most cases. Nail stylists constituted a significant proportion of the professional group, while reactions to nail styling products dominated the non-professional group.
2) Because allergies can complicate not only manicures
HEMA is also found in other areas, m.in. in dental bonding systems or materials/adhesives. Therefore, allergic people often have to disclose their allergy outside of the dental practice – for example, at the dentist's office.
3) Because it's easier to prevent than to fix the problem
In salon practice the most effective strategy is limiting skin exposure to uncured monomers and selecting products designed to minimize the risk of irritation.
What is more important than the words "HEMA free"?
Even the best formula won't replace safe work practices. If you want to truly reduce the risk of allergies:
"Must have" rules in the salon:
- Zero contact of the product with the skin: do not flood the cuticles, close the application with the brush "under the cuticles" precisely, but without touching the hair shafts
- Full curing in accordance with the manufacturer's recommendations and the lamp's capabilities (there is no point in shortening the time)
- Gloves: in case of allergies to (meth)acrylates, gloves that provide a better barrier are recommended
- Good ventilation/dust and fume extraction and workplace hygiene
An important and honest note: "HEMA free" does not mean "zero risk." Other (meth)acrylate ingredients may still be present, which may cause a reaction in some people. Therefore, the rules for application without skin contact are absolutely crucial.
Modena Nails products that support HEMA-free work
If you want to tailor your salon's offer to sensitive clients, or you simply focus on modern formulas with an increased safety profile - below you will find the most important "safety tips" from Modena Nails (based on the manufacturer's descriptions).
1) Allergy Safe System: base + gel + top
This is the most consistent solution if you want complete work in one "secure" system:
- Allergy Safe Rubber Base Clear – the base is described as completely free of HEMA, HPMA and TPO, intended for sensitive skin; the description also highlights durability and adhesion (up to 6 weeks) as well as flexibility
- Allergy SAFE Builder Gel Clear – medium-thick "new generation" building gel; the description indicates a formula without HEMA and HPMA, minimizing the risk of irritation, and comfort of work (m.in. "does not burn in the lamp", does not turn yellow, remains transparent)
- Allergy Safe Top No Wipe – top coat without dispersion layer; description: formula without HEMA, HPMA and TPO, intense shine and scratch resistance
Other HEMA Free products:
- Thixo Control Gel – work control and formula without HEMA
- GLOW Builder Gel – HEMA Free + "glow" effect
- Fiber Guard Gel – gel in a microfiber bottle
- Top Glow Non Wipe – an innovative glossy top coat with a delicate, subtle cover shade that gives the styling the effect of healthy, radiant nails
- Pro Builder Gel - a new and hit! 9 shades of thick, self-leveling gels with a low polymerization temperature (minimizing the burning sensation in the lamp). PRO Builder Gel is a product that impresses with its quality, functionality, and... price.
Summary
HEMA is a (meth)acrylate ingredient that can cause allergic reactions, especially when skin comes into contact with the uncured product. Therefore, more and more stylists and clients are consciously choosing HEMA-free formulas.
Remember: the most important thing is the technique of working without contact of the product with the skin and full curing. HEMA Free products provide additional support, but do not replace proper application and safety practices in the salon.
