- The Structure Repais Leave-in Crem should not be rinsed off. Apply to towel-dried hair before blow-drying or using hair straighteners. Structure Repair uses strengthening ingredients from the sea in the form of algae that soften and repair damaged and tired hair. The Structure Repair-series has a fresh scent of vanilla, rose and jasmine. In comparison to our True Soft range, the Structure Repair series is tailored for damaged and chemically treated hair, while True Soft is suitable for naturally dry hair.