With a brush, the formula—which also contains silicone and protein compounds—is “painted” onto your hair, coating the cuticles (the outermost layer of strands). Then, because heat activates the ingredients, a flatiron is used to seal the solution, changing the hair’s shape. The entire process might take an hour or two. The result? Shiny, smooth, straight hair with body and loads of volume. A keratin treatment will truly transform your hair; your hair will take less time to blow-dry, you will no longer need to use a flatiron, and humidity won’t make your hair frizzy. Your hair will look and feel healthier.