Ouidad Deep Treatment Curl Restoration Therapy for All Curl Types (475ml/16oz) A salon-strength treatment to replenish essential nutrients and reinforce the hair shaft, so curls are left healthier, more defined and frizz-free. Used with or without heat, it penetrates deep into the cuticle, replacing the proteins and 14 amino acids critical to curl formation. Used with or without heat, it penetrates deep into the cuticle, replacing the proteins and 14 amino acids critical to curl formation. How to Use: Apply evenly through clean, damp hair. Apply 2-4 pumps for Wavy / Loose Curls Apply 4-6 pumps for Tight / Coily Curls Express option: Leave on for 10 mins, rinse and follow with conditioner. Ultimate restoration: Clarify hair, apply and heat for 20 mins. Rinse and seal with hair mask.