Spirulina protein strengthens and nourishes while an innovative formaldehyde-free bonding polymer mimics the coating and smoothing properties of a keratin treatment when activated by heat. Good Behavior also helps to cut down on blow-drying time and helps to protect against humidity, heat, and UV damage, leaving hair soft, shiny, and frizz-free. The lightweight formula is suitable for all hair types—and coarse hair, natural curls and waves stay relaxed until the next shampoo.