This kit includes a Sleek Tint Applicator Brush for easy application Includes: - Quantity of 1 piece - No 1 Bond Maker 16.9 oz - Quantity of 2 pieces - No 2 Bond Stabilizer 16.9 oz - Quantity of 1 piece - Sleek Tint Applicator Brush What it is: No 1 : Helps restore during the bleaching or dyeing process hair compounds. Mix with brighteners or hair color. Helps restore hair connections for stronger hair. No 2 : Through the integrated OPTI pH system hair connections are strengthened, the pH is balanced and strengthen the hair structure to chemical treatments. WELLAPLEX BOND BUILDER SYSTEM WITH OPTI pH SYSTEM Reconstruct hair bonds for stronger hair OPTI pH SYSTEM enables optimal penetration of lifting & dye molecules for perfect color and lightening development The perfect match for Wella Professionals lighteners and color No need to change peroxide or development time