Mar 27, 2014 - My hair is a very fine 3B/3C. I was nervous about using the product when I saw the ingredients. My hair tends to be pretty protein-sensitive. The system was very easy to use. The instructions were well-written and very thorough. I think that the product is fantastic, but it wasn't meant for my hair. My hair felt very draw and straw-like, which it usually does if I try to use a product with hydrolyzed proteins. If you're protein-sensitive, this probably wouldn't be great for your hair. If your hair does well with protein, then you should definitely give it a try!