Green & Healthy

HEMA, Di-HEMA-TMHDC what does it mean?

2 min to read

As you know, Green Flash™ complies with European regulations and excludes any controversial molecules from its composition.
This is notably the case for (methyl)acrylate monomers, which include the molecules named: HEMA and Di-HEMA-TMHDC, banned from sale to the public since September 2021 due to their sensitizing potential.

You may have missed it, but according to the new European regulation*, these two substances found in many semi-permanent gels are now prohibited from sale to the public and may only be used in salons by professionals.

The reason? Their sensitizing potential.

What are the risks?

Indeed, upon contact with the skin, these very small and reactive molecules can penetrate the epidermis and cause severe allergic and inflammatory skin reactions. That is why only care professionals are now authorized to use them.

The problem is that other molecules of the same type, with the same sensitizing potential, are still allowed and used in the composition of many semi-permanent gels.
To take no risks, Manucurist simply developed its Green Flash™ LED polish, without (methyl)acrylate monomers.

Green Flash™: free of (methyl)acrylate monomers, non-sensitizing, and 100% compliant with regulations.

and today stands out as an exception in the semi-permanent market.

Since its launch in 2019, the Green Flash™ innovation was already ahead of regulations by 2 years, carefully substituting petrochemical ingredients with biosourced alternatives and banning any controversial molecules (allergens, endocrine disruptors...) from its composition.

Biosourced up to 84%, the Green Flash™ range is therefore an alternative to classic semi-permanents in terms of composition, but also uncompromising on tenue and shine. In just 3 easy and quick steps, the manicure stays flawless for up to 10 days, and removal is gentle and easy thanks to a mild acetone-free remover. To enjoy this complete routine at home, you can start with a Green Flash™ semi-permanent polish kit.

🌱 At Manucurist, nail beauty is uncompromising!
The green revolution is rocking, be part of it ⚡️


A true revolution. The application is very easy as is the removal, the tenue is excellent. I am convinced. I couldn’t use classic semi-permanent polish because of many allergies and classic polishes didn’t last. I recommend it 100%. Amal S.

Allergic to one of the main molecules in usual polishes, I could no longer paint my nails. I’m reborn!! Inès C.

Having allergies to classic semi-permanent polishes, I found my happiness with these polishes! No more allergies and the same beautiful effect. Sandy V.

Discover what makes Green Flash™ different?

Learn more about the regulation