This Wella SP Repair Infusion is an intensive regenerating personalized treatment. Combined with any Wella SP masks, the SP Repair Infusion adds an extra repair effect and helps to protect the hair from further damage. How to Use: Add one single-dose of Infusion (5ml) to 25ml of SP Mask. Mix together evenly. Apply on toweled dried hair. Leave on for 5-10 minutes. The effect will be intensified with heat. Rinse out thoroughly.