Amazing

My first time filing with this, I was really impressed that it buffed and polished all on one side. That is the uniqueness that glass nano file has compared to the buffer blocks that need step 1 through 6 to get a mirror shine. You don’t have to go through all those steps to get a super shine with the glass file.This buffer is really small. It measures 9 cm or 3 3/4" long. I was initially disappointed with the size, but it's actually an advantage because the small size allows you to maneuver the buffer over the curve of the nail very easily. The file part is only on one side. The nano-etching is very uniform and hardly rough, so it's very gentle on the nails. Also the etching doesn't seem to wear off and the file is very easy to clean after each buffing session. It manages to make nails shiny for about 2 weeks, while removing very little of the layers of the nail. I only notice a very light dust from the nails after each session, and most of it seems to be from the cuticle.