Apply your K18 mask on clean, damp hair after shampooing and before conditioner. If you use conditioner or other products aside from shampooing before K18, they can create a coating blocking the K18PEPTIDE™ and reducing its ability to repair effectively. If you want a deeper level of protection apply DAMAGE SHIELD conditioner AFTER waiting the 4 minutes to start repairing at the molecular level. #k18hair #k18repair