The Hot Oil Concentrate supplies an intensive treatment for dry, dehydrated hair. It replenishes the hair with a rich 6-oil blend, boosted with Castor Oil. It provides lasting hydration that removes frizz, increases shine, increases softness, and helps to remove tangles. Suitable for all hair types, especially dry, chemically treated, or damaged hair. To use: Place the tube in warm water for 1 minute. Apply the entire contents of a tube to dry hair, ensuring the entire head is covered. Leave for 1-2 minutes before rinsing and applying shampoo and conditioner. Apply once a week. All Bumble and bumble products are free from parabens, phthalates, mineral oils, and formaldehyde. Bumble and bumble is also a cruelty-free brand, never tested on animals.