Schwarzkopf Professional Hair Sealer is a post-colour treatment with an optimised pH level that strengthens and regenerates the hair fibre and locks in colour pigments for improved longevity. It smoothes the hair fibre after each colour service. It helps to prevent colour fading and shifting and is easy to apply and rinse off, thanks to its consistency and improved detangling properties. It gives a brilliant colour result from roots to ends. It neutralises and regenerates the hair and helps to stop the oxidative process. Simply apply 2 to 3 pumps after shampooing, then work into the hair for 30 seconds and rinse thoroughly. Use additional care products if needed. Comes in a 750-ml bottle.