Schwarzkopf BC Bonacure ph 4.5 Colour Freeze Micellar Sulphate Free Shampoo This sulphate-free shampoo gently yet effectively cleanses coloured hair. With its optimal pH value of 4.5, this shampoo prevents your hair colour from fading. This keeps your colour fresh and brilliant until the next dye. The colour pigments are fixed inside your hair. In addition, the hair matrix is stabilised and tightened. The hair structure is protected from the inside and outside to keep your colour fresh and protected from fading. - sulphate-free - optimal pH value of 4.5 - prevents fading - fresh and brilliant - fixes colour pigments - stabilises hair matrix Application: massage a hazelnut-sized portion slowly into damp hair, approx. Leave for 1-2 minutes and rinse thoroughly. Suitable for everyday use. About pH 4.5 Color Freeze Perfect, vibrant colour is crucial for a great look. A good colorist puts together the shades to perfectly match the complexion of his client as well as her style. Finding the perfect colour requires a lot of knowledge and skills, so the chosen shade should be retained for as long as possible. pH 4.5 Color Freeze from BC was developed for exactly this purpose. The patented pH 4.5 technology not only seals the surface of coloured hair, but also locks the colour pigments deep into the hair matrix so that an ultimate perfect colour result is achieved.