This is a product I'm currently testing. I have very fine hair, so I'm always looking for anything that claims it can help with adding to volume and I've been through a lot of different product from high-end to reasonably priced drug store brands. Fibralogy is very well priced and smells great. I can not tell yet if it has added a ton of volume to my hair but it does feel nice afterwards and it certainly does not weigh it down any. It looks like a little more volume to me. I'm certainly happy with the product and will continue using it. I love that they have a hair mask to go with it! It is amazing feeling!