That it's best to sand your nails down prior to application. I used it for a couple months just applying post shower, and it was working a bit. I figured more absorption had to be a good thing, so I started roughing up my nails, showering, then applying. That immediately cleared up my nails. Within days, they were smooth and clear. Everybody's different, but this is working in my case.
Working for me, but I found out...
Reviewed in the United States on August 21, 2023