Keratin ResearchExtra Strength Forte-Plus Brazilian Hair Treatment Professional 120ml Bottle with Clarifying Shampoo & Sulfate Free Kit Proven Amazing Results

Just wonderful I wanted everyone to know.

My wife's hair is naturally somewhere between wavy and curly, the strands are fairly thin but she has a LOT of them. Her hair is also frequently color treated and damaged.She bought this kit and we meticulously proceeded through the steps. The smell wasn't terrible except through the blow-dry portion, and the fumes made our eyes water. 2 box fans and a ceiling fan were necessary to help ventilate. After blow drying, her hair felt a bit grungy, kinda sticky and heavy.The flat-iron step went pretty well and that grungy feeling lifted considerably. Her hair was definitely smoother, softer and shinier. It was also fairly flat, but we chalked that up to any remaining product weight and figured it would go away after the first shampoo.After reading some other reviews, she waited 5 nights before washing though the instructions only suggest 3. Washed and conditioned with sulfate-free products. Drying time was reduced quite a lot which is nice.However, after only the first wash, her wavy hair is back about 40%. It is still smoother, softer and less frizzy, and that's what she really wanted the most, so it's still kind of a success. Not sure i would go through this process again but she might decide to find a better helper and repeat the procedure in the future.Will try update after a few more washings to see how it goes.Note: this product DOES contain formaldehyde. Research told me it is best left to the pros and to find products for the DIY crowd that were formaldehyde-free and I foolishly didn't notice this one didn't fit that bill until it was already in my hair.

The shampoo and conditioner are amazing, made a great difference in my hair so I bought the larger size HOWEVER the keratin treatment is not as good in this size like the small that got first so I don't understand why they have 2 types same name. Buy the shampoo and conditioner and get the small chocolate colored keratin bottle not this one.

Works better than expected. Didn't last as long as I expected. However, it could just be my unruly, thick, and curly hair.....

I usually use the regular strength keratin that is formaldehyde free which also works amazing. I was curious to try something stronger since I’ve been going to the gym a lot and so far this has proved to be amazing! My hair has several textures from curly to wavy and frizzy all over. My hair is like 95% straight with the exception of a few waves. Amazing. I can wash my hair, wake up and go without having to do a thing.

I thought I could save going out for a Brazilian using this product, but I put the product on as directed, followed directions perfectly and my hair still has way too much curl. I have blond curly, not kinky, but frizzy. I don’t know why this didn’t work well for me.