Our highly concentrated Protein Booster contain a unique formula including Cysteine Complex and over 9 natural ingredients designed to strengthen and restore damaged hair from bleaching, straightening and over brushing back to a shiny, healthy state with little down time. Use our uniquely formulated Somèrfield Protein Booster by massaging into clean hair before applying the Somèrfield Hair Mask caps. 3x Protein Boosters are included to fix your dry hair, damaged hair and frizzy hair problems.