Got frizz? You need this hair treatment. It acts like a mini-keratin treatment with humidity-blocking technology that lasts 3-4 shampoos. It works on all hair types, and it makes my hair feel so silky-smooth and shiny. You just spray it on wet hair, then dry it with a big round brush, using some tension as I straighten it. (My hair is naturally straight, but can get really frizzy without the right product.) I’ve been using it regularly for a few months, now, and I can definitely tell the difference when I go too long in between treatments.