Wella SP Mask Repair 13.5 Ounce 400 Milliliters Wella SP Repair Repair Mask is formulated with repairing, nourishing, and protecting ingredients to intensively restore damaged hair and protect it from further damage. Hydrolyzed Keratin Protein, Conditioning agents, Cationic agents, and Silicone work together to combat damage and restore health to hair. Hydrolyzed keratin proteins are deposited on the damaged surface of the hair to repair and smooth. Conditioning ingredients deeply penetrate deep inside the hair to aid in long-term manageability. With a new generation of positively charged, hair-friendly silicones that neutralize the negative charge of damaged hair, the structure of the hair is rebalanced and instantly protected.