This product is amazing, I used to get very expensive hair relaxer kits (phitospecific)but none of them has such an amazing results like optimum care anti breakage. My hair is mixed. Its very curly, coarse, and with lots but lots of frizz. This relaxer is easy to apply, has a very easy guide so you can do it yourself, doesnt smell at all, and after 20 minutes I got the results I was looking for. My hair is straight and it feels and looks lovely. I have tried relaxers in hair dressers, kits at home, etc and I definatelly sticking with this one. I recommend this product for someone that has thick and coarse hair. Excellent product, I wish I bought it a long time ago. PD; the range of products from optimum care is also excellent I am using the mosturizer and oil balm, they are doing wonders for my damaged hair.