I had two intensive treatments. Considering the cost, the results were pitifully minor and it lasted only a few months at best. I was told it would last 5-7 years or more. I think that the hype, the magic and the hope that they give you should be subjected to some warranty that it will last as long as they claimed. It was such a waste of money. The result was so minor that nobody noticed it except my doctor who held up the mirror and told me it was so much better than when I walked in. I might have convinced myself of the same.