Strengthening hair mask that penetrates the hair with an active regenerating system. Provides shiny, strong hair.Application: Squeeze excess water from the hair. Distribute evenly, concentrating on the most damaged areas. Leave on for 2-3 minutes, rinse thoroughly.The basics of any wardrobe strengthen any look at any time, while taking away stress. This is where Sebastian comes to the hair's rescue with the deep conditioning, strengthening and repairing Penetraitt shampoo and conditioner. The actively regenerating system penetrates hair, protecting it from stress caused by chemical treatments and heat styling and giving it super-strengthened, silky-soft style. Protects hair color.