Wella SP’s Smoothen Infusion is the perfect personalised treatment for smooth and silky hair. This infusion works with the correct masque to pamper hair intensively. It has a long-lasting anti-frizz protection, with the hair also being intensively pampered. Use: Use one dose of SP Smoothen Infusion for a 25ml SP masque. Mix both together and work the elixir well into damp hair. Rinse off thoroughly after 5 to 10 minutes. The effect can be intensified with heat.