This Wella SP Volumize Infusion is a volumizing customizable treatment. Combined with any Wella SP masks, the SP Volumize Infusion adds visible volume to the hair. 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.