Why do hairdressers say things like that? Products that coat the hair actually protect the hair, like heat protectants and oil treatments. IMO if something coats your hair AND damages it in some way, many women would stop using it. I know I would. Plus, you can go to a salon and pay them to give u a hot oil treatment and they don't say, "Oh no, I can't give u that b/c its not going to work"! Hairdressers can be so negative. Just my opinion.