Specifically formulated for straight hair, Retrò.specific Flat Hair Shampoo for straight hair, thanks to its instant emollient action and silk proteins, enhances natural smoothness. The laminating action protects the hair from humidity, enhancing its smoothness.

How to use: Apply to wet hair, massage gently, and rinse. On the second pass, also cleanse the lengths and ends, leave on for 2-3 minutes, and rinse.