Formaldehyde-Free Organic Keratin Hair Treatment Set - 16oz Natural Smoothing System for Frizz Control, Volume Reduction & Damage Repair | Salon-Quality at Home for Straight, Shiny Hair

Amazing!!!! I never post reviews but felt i had to on this one because of how great it is. First off, it came 3 days earlier than expected and came with a bonus styling mousse (score). I did the treatment myself even though it says its for professionals only. I flat iron my hair a lot and have dyed it in the past so after watching a you tube tutorial, I was confident that I could do it myself. I decided to use the clarifying shampoo the night before, and let it air dry before I went to bed, to cut down on the treatment time the next morning. The process is lengthy and can get tedious so doing that helped a bit. Plus I have an infant and a toddler so i knew it would take me longer than most people because I had to stop a lot during the process to take care of them. I used a quarter of the amount of the shampoo and hair mask but had to use the whole treatment (step 2) on my hair. I know most people can get away with using about half of the product but I have so much thick hair, that even though it is shoulder length, I still needed the full 4 oz. For this reason, I will probably buy the treatment separately in a larger size (I think I saw a 16 oz size advertised for $160). This will give me 4 treatments which is well worth the money. It had a pleasant smell, and the only time it smelt chemically is when I was flat ironing. But even that wasn't too bad. Iv'e dyed my hair brown to cover roots with chemicals that were more harsh. I pretty much followed the directions except that I kept the treatment in for an hour before rinsing. Once I rinsed and used the hair mask, my hair air dried almost completely straight with no frizz. It usually dries wavy and curly and very frizzy, even when I flat ironed it before the treatment, it wouldn't take long before the frizz would return. i ran the flat iron over it for 5 min and it looked like I got a professional blow out. I can't attest to how long it will last, because I just did the treatment but even if it lasts for six week, it will be well worth the money.