The allergy substances are well-known LEFT in nail design products.
This type of allergy can also develop after years of product use.LEFTshould not use the substitute In-LEFT be confused.
SOUTH =2-Hydroxyethylmethacrylat oder Hydroxyethylmethacrylat
Both substances are monomers used to polymerize UV gels.
thePolymerisationis a chemical reaction in which monomers, mostly unsaturated organic compounds, under the influence of catalysts and with the breaking of the multiple bond to form polymers (molecules with long chains consisting of monomers linked together) react.(Those:chemie.de)
However, the molecular size of di-LEFT is much larger than that of LEFT and therefore canIn-LEFT is not easily absorbed into the skin, like LEFT.
According to the British Association of Dermatologists (BOD) and all other published scientific articles LEFT the #1 allergen product for nail products.
As proof of this, published the European Scientific Committee for Consumer Safety (SCCS) in 2018 a report stating that there was no scientific evidence that In-LEFT causes allergies!
ATTENTION - cross allergy
Incidentally, hydroxypropyl methacrylate (2-HPMA), also known as hydroxypropyl methacrylate (HPMA), is the second most common nail product allergen according to the BOD. This is used by some factories and brands as an alternative to LEFT and in LEFT-free acrylic fluid. As a result, those who switched to LEFT-free monomer because they already had an allergy to LEFT often develop an HPMA allergy as well.
Scientific Committe for Consumer Safety (SCCS)
The Scientific Committee on Consumer Safety is the EU's body of dermatologists, toxicologists and scientists who decide which ingredients can be used for cosmetic purposes, in which region of the human body and whether the amount of the ingredient should be limited for a particular application.
In 2018, the SCCS released a report on the safety of LEFT and In-LEFT. If LEFT and In-LEFT are identical chemicals, why would they review and report on them separately?