Blanc Blond (2.47 oz/70 g) + Cream Developer (6.35 oz/180 g): The processing time and Cream Developer volume (10, 20, 30 or 40 vol.) must be selected by the professional, taking the desired result into consideration. In a non-metallic container, mix until obtaining a homogeneous cream. Apply the mixture to clean, dry hair with the aid of a brush. Use proper gloves. *The processing time must be controlled by the professional, according to the desired lightening and strands condition, for a maximum of 60 minutes. Rinse with plenty of water and then wash with TRUSS WS Bidimensional Shampoo and hydrate with TRUSS WS Intensive Nutrition. TIP: For extra protection add 0.18 oz/5 g of TRUSS 8X Powder to the mixture and apply TRUSS K-Recovery directly to the most fragile parts of strands.