The K18 Leave-In Molecular Repair Hair Mask is my go-to treatment for damaged hair. I use it after shampooing to help my hair feel stronger, softer and smoother without weighing it down. I linked both the full-size and mini K18 hair masks. K18Hair HairMask DamagedHair ColorTreatedHair LTKgrwm LTKselfcare LTKBeauty