Ion Volumizing Shampoo is the best shampoo I have ever used. I have very fine, thin hair and have tried almost every product on the market over the years to gain body and volume. I never found one that actually did the job until I read someone praising Ion in a magazine and decided to try it. I purchased it at Sally's Beauty Supply. I was very skeptical, since I had not had much success over the years with promises of volume, and I was very surprised when my hair looked like I actually had some hair on my head. I have been using it for about three months and will use it forever. My hair will never be thick and luscious, but I have the volume I desire and I am very pleased with this wonderful product. It is by far the best shampoo I have ever used and would highly recommend it.