CHI Luxury Black Seed Oil, 147 ml, Hair Creams and Gels for Women, The CHI Luxury Black Seed Oil leave-in treatment gives your hair everything it needs after washing. Characteristics: acts against frizz provides hydration and nourishment for your hair gives an appealing shine makes hair velvety smooth How to use: Apply to freshly-washed wet or even dry hair. Do not rinse. Style your hair as usual.