This is a great reconstructor! I use it every few months when I feel my hair needs an extra dose of protein. I still follow the directions that were on the salon only bottles. I leave it on for about 20 minutes, sometimes with heat like my stylist did, then shampoo after with Therappe shampoo and Humectress conditioner because I always have them both on hand. Any moisturizing shampoo and conditioner (without silicones or protein) would work as well. I've also used it at times as a protein filler before coloring my hair.
I do not suggest using this in any way other than the way the directions tell you to, or more often. Misuse of protein can damage hair.
Since this is a protein reconstructor and not a conditioner, you will not see noticable results immediately as you would with a great conditioner or deep treatment. What a protein reconstructor does is strengthen the hair from the inside out. Over time, this means stronger hair and less damage. A must if you color or heat style, in my opinion.
This product has been released by Nexxus to be sold on the mass market now so no worries whether or not you're buying the real thing when you see it available at grocery stores, drugstores or discount stores like Wal-Mart, K-Mart or Target.
The bottle seems small but I get at least 4 or 5 uses out of it, even as long as my hair is, so it's really worth the money.
My hair is 1c-2a/F/ii - 35" long, fine, thin, color-treated, with dry ends.