I had shellac French polish put on my nails just before Christmas and they were starting to grow out and look unsightly. I prefer to have them done for special occasions and keep my nails strong and healthy. This tool is so handy! It comes in a small pouch (no box so less packaging) and has about 5 different heads. There are instructions for each one. It took about 30 minutes in total but it has fully removed all the shellac. You have to be gentle so as not to press too hard and damage your nails. I used 2 x Duracell AA batteries and found the power just right. I can only presume that other reviewers used rubbish batteries as this was the perfect speed to remove the 3 layers of shellac and varnish. The pouch is small and not bulky at all, so will fit perfectly in my drawer and the pen itself is comfortable to hold. Plus it is much cheaper than other alternatives. I prefer the battery operated pen as it uses up much less space than the usb charging ones, plus it worked much better than acetone. Also it will be a great tool for when my nails need filing or buffing!