Biolage Deep Treatment SmoothProof multi-use deep treatment hair mask for taming frizz, split ends & fly-aways for an overall sleek finish. Hair is instantly smoother with less breakage in just 5 minutes. Frizzy hair is controlled, feels softer and is more manageable.BenefitsSofter HairControls frizzy hairSmooths hairProtects against breakageClinical ResultsUp to 70% less breakage*Immediately hair is 8X smoother***When used as a system with Biolage shampoo**Vs. non-conditioning shampoo with the system of Shampoo and Mask Suggested Use: Apply to wet hair and leave in 3-5 minutes. Rinse thoroughly. Biolage recommends that you use the Biolage SmoothProof Deep Treatment after cleansing with Biolage SmoothProof Shampoo for added frizz protection and smoothness. Use once weekly in place of Biolage SmoothProof Conditioner. Recommended for frizzy hair. Precautions: In case of contact with eyes, rinse them immediately. UPC: 000002543964 Weight: 0.72 lbs