Sự khác biệt giữa HEMA và di-HEMA là gì?

Sự khác biệt giữa HEMA và di-HEMA là gì?
Well, their only similarity is that they are both monome, and both are used in acrylate-based lớp phủ móng tay.

They have a very different molecular kết cấu, with di-HEMA being considerably larger than HEMA.

HEMA is hydroxyethyl methacrylate

di- HEMA is Trimethylhexyl Dicarbamate

HEMA is a known high-level chất gây dị ứng.
All acrylat are allergens, but di-HEMA is considerably less so. This is almost certainly due to its molecular size and less ability to penetrate the skin.

They are both safe to use if used correctly, by a qualified thợ làm móng chuyên nghiệp, and in appropriate percentages.

They have both been banned in the UK and EU for RETAIL products. This is due to the high possibility of HEMA causing an phản ứng dị ứng when used incorrectly. It would appear that di-HEMA has also been banned, purely due to the perceived connection to HEMA.

Any nail product with these ingredients must be “For Professional Use Only”.