I have fine, thinnish, blonde hair that is quite dry & very fragile. I purchased this based on all of the hype on the hair board & was not disappointed. I was a bit nervous that extra protein would make my hair drier than it already is, but this leaves it soft, shiny & healthier looking. It also seems to detangle my hair quite well, which is kind of a miracle as my hair is very prone to tangles. I haven't used it long enough to determine whether it is actually fortifying my hair & helping with breakage, but based on the initial results, I will continue to use. My only complaint is that it is quite hard to find in the areas I've looked - I eventually found it at one Walgreen's, but wasn't able to find it at others.