In the first few months, it seemed good to me. Afterwards, it didn't polymerize much at all and caused swelling in my fingers, as it did to a lady who wrote about it in her review. Generally, I have a terrible burning sensation after polymerization, it heats up a lot. I do not recommend it, not even for training because it is not good!!!

The first 6 months it was perfect, it polymerized super well. After 6 months, I noticed that it was burning me, resulting in my fingers swelling twice with a lot of itching. It polymerizes too much and my fingers stick together! I will not buy this brand again!