I trained to to Minx nails and they really are great. I don't suggest you do them on fingers though as they don't last very long, but on toes they give excellent long wear, anything from six to eight weeks if applied. They are expensive and if you want repeat custom then be honest with clients and tell them that due to the nature of the product it won't last more than a couple of days on the fingers. It's not right to charge £30.00 for a treatment which doesn't last very long. However,there are other wraps on the market which I have tried and they have been a lot cheaper than Minx and lasted just as long.