Ultra Hydra Source Leave-In Conditioner, infused with cupuaçu butter, is designed for very dry hair. It provides 72 hours of hydration and frizz control. Quench your thirst for beautiful hair. Biolage Ultra Hydra Source Leave-In Conditioner, infused with cupuaçu butter, is designed for very dry hair. It provides 72 hours of hydration and frizz control. BENEFITS: Infused with cupuaçu butter, our leave-in conditioner for very dry hair penetrates the deepest layers of the hair fiber for 72 hours of hydration and frizz control. It leaves hair feeling lightweight and soft. Free of silicones, parabens, and mineral oils.