Since its launch in 2019, Green Flash™ has anticipated regulations by excluding the molecules HEMA and DI-HEMA-TMHDC from its formulation, which are sensitizing and now banned from sale to consumers.
HEMA? What is it?
They are called: HEMA monomers and Di-HEMA-TMHDC oligomers. Behind these mysterious names lie two small molecules found in many traditional semi-permanent polishes. These substances have the property of bonding together under light (UV, LED) to form a hardening film that allows the tenue of semi-permanent polishes.
What are the risks?
The problem is that these molecules, belonging to the chemical family of (methyl)acrylates, are also “sensitizing.” Very small, highly reactive, and volatile, these molecules can penetrate the skin and cause severe allergic and inflammatory skin reactions. Nail overflow during application then becomes quite risky… As for removal, with these types of molecules, it requires the use of acetone and abrasive nail filing.
Characteristics of HEMA and DI-HEMA TMHDC substances
- Sensitizing molecules on direct skin contact (allergic dermatitis)
- Very small molecules, high reactivity, ability to penetrate the epidermis = skin conditions.
- Volatile = risk of inhalation and irritation of respiratory mucous membranes, asthma.
- Removal requiring the use of acetone and abrasive filing for nails.
What does the law say?
Since September 2021, the new European regulation* prohibits the sale of manicure products containing these two molecules to consumers. Now only care professionals are authorized to handle these products in salons and are encouraged to take many precautionary measures (extraction table, filtering mask, and nitrile gloves).
What does the European regulation say?
Since September 2021, nail products and semi-permanent polish gels containing HEMA and DI-HEMA-TMHDC substances are:
- Prohibited from sale to consumers
- Allowed under conditions for sale to professionals
Products distributed to professionals must display the notice: "Reserved for professionals - may cause an allergic reaction"
Green Flash™: the 0% risk, 100% regulation-compliant alternative.
From its launch in 2019, the Green Flash™ innovation anticipated regulations by offering a new generation of long-lasting LED nail polishes that are cleaner, greener, and non-sensitizing.
The result of extensive research, Green Flash™ by Manucurist complies with regulations, is authorized for sale to the general public, and above all does not contain (methyl)acrylate monomers with sensitizing potential. To replace them, we use copolymers whose complicated name - Bis-HEMA Poly(1,4-Butanediol)-9/IPDI Copolymer - might be confusing.
Don’t worry! We’ll explain why our products are not sensitizing.
Chemically speaking, our copolymers consist of a combination of 3 molecules, each with a different composition. Unlike (methyl)acrylate monomers, our copolymers are not sensitizing. Much larger and less reactive, they are not volatile, do not have the ability to penetrate the skin and therefore do not cause allergic inflammatory skin reactions.
“Being allergic to classic gels and semi-permanents, I turned to Green Flash™ products! I am so satisfied with the result, I have no allergic reaction! I recommend it 200%.” Louise P
“I tried so many semi-permanent polishes and all triggered allergies. Today I finally found a natural semi-permanent polish that lasts! No more allergies and the nail is not damaged. Removal is so simple!” Elise B
Green Flash™, the uncompromising alternative for tenue and shine
However, their effectiveness remains the same: thanks to curing under a LED lamp, the copolymers bond together to form a polymer network that solidifies the polish layer and gives it long tenue.
Green Flash™ by Manucurist is therefore also an alternative without compromise on tenue and shine. In just 3 easy and quick steps, the manicure is flawless for up to 10 days. To find all the essentials of this routine, you can start with a Green Flash™ semi-permanent polish kit. And above all, it removes like a polish using a gentle, acetone-free remover, without damaging the nails.
Green Flash™ by Manucurist
- Non-sensitizing
- Complies with European regulations
- Authorized for sale to consumers
- Free of (methyl)acrylate monomers
- Removes gently without acetone
- Shine and tenue up to 10 days.
Discover the Green Flash™ innovation and what makes it stand out from the others
Sensitization and allergies: be careful what you put on your nails
