This product is perfect for that second softening of the lashes (after step 1 softening), for those stubborn/thick lashes that will not soften with one processing of the step 1. Apply it after step one, to the root area only for an additional 3 min, depending on the lash thickness, it can be applied for up to 7 min.
 
This product is made of a low-irritation derivate of thioglycolic acid instead of conventional TGA.