Hair "sprinkle" [SEP] I do not have thinning hair, but there are parts of my hair that I would like to be thicker. After trying Dr. Yates Keratin Fiber Hair Enhancer, I can say that this product helped me. The color matched well (I have dark brown). I sprinkled lightly over a small section of hair, close to my scalp. I could instantly see the area darkening and looking thicker like there was more hair there. The hair enhancer is a powdery-like substance that is really just a lot of tiny little fibers when you look up close. It comes out pretty easily when you shampoo your hair.  Made in Canada.