Sebastian Penetraitt Hair Strengthening Conditioner 1.7 oz. Protects and strengthens stressed hair against damage when it is wet and most vulnerable. This systems provides effortless detangling and deep conditioning, transforming hair from dry and dull to soft and shiny. Recommended for chemically treated hair. Color safe. Travel Size. Sebastian professional penetrate strengthening and repair conditioner, strengthen and repair conditioner removes any stress for a super-strong silky-soft style. Color safe. Protects and strengthens stressed hair against damage when it is wet and most vulnerable. This system provides effortless detangling and deep conditioning, transforming hair from dry and dull to soft and shiny. How to use. Use it remove excess water from hair. Concentrate application at the ends. Rinse thoroughly. Best for chemically treated hair.