For me it works as it claims, noticeably less hair falls out. Pleasant smell of the shampoo is a plus.
Due to the high quality of the stamp, my girl just couldn't help herself to try them all out once she got them. I made use of them to introduce and test my girl if she really understand about them. It worked really well. For example, I put a Dime stamp and then an equal sign next to it. Then I gave the penny stamp to my girl and asked her to finish up the equation. After it, for same question, gave her the nickel stamp and asked her to finish it again. It was totally fun without stress. :)