Amazing. Apply a thick coat on wet nail polish. Within 10-20 minutes, your nails feel and look like glass. I can do my nails at night and not wake up with sheet prints in the morning.
Sally's has it. I've also seen it in CVS and Publix. It used to be sold only in salons but I think the word is spreading. Regarding cost, anywhere from $8 - $13. Depends on where you go. But it's deffo worth it.