The Xtrem Flash Top Coat was formulated in strict compliance with European cosmetics regulations, among the most stringent in the world. It does not contain any of the ingredients banned under these regulations: HEMA, Di-HEMA, or TPO. 
However, it does contain other permitted methacrylate monomers. 
A reaction to the product may therefore occur in people who are already sensitive, most often due to poorly cured residue or product overflow onto the skin.
For a controlled manicure, we encourage customers to follow this application protocol:
- Apply very thin coats,
- Remove any excess from the cuticles before curing,
- Cure thumbs separately to prevent the product from shifting onto the cuticles.
By following these precautions, you will be able to apply the Xtrem Flash Top Coat in a controlled manner.