Biolage SmoothProof Deep Treatment Pack is a multi-use hair mask designed to tame frizz, manage fly-aways, and repair split ends for a sleek, smooth finish. This concentrated mask helps reduce hair breakage, leaving hair softer and more manageable. Benefits Smooths and softens hair Controls frizz and fly-aways Protects against breakage Ingredients Key ingredients include natural elements such as camellia and castor oil, which help hydrate and smooth hair, delivering long-lasting nourishment. Suggested Use> Apply the mask to wet hair, focusing on mid-lengths to ends. Leave on for 3-5 minutes to allow the nourishing ingredients to penetrate. Rinse thoroughly. For best results, use after Biolage SmoothProof Shampoo. Replace your regular conditioner with this mask once a week for enhanced smoothing benefits. Precaution: Avoid contact with eyes. In case of contact, rinse immediately.