Developed for weekly use or whenever dull hair needs a boost the brilliant shampoo from white hot gently cleanses hair to banish dullness and unwanted yellow brassy tones caused by pollutants and uv rays fortified with keravis the lightweight purple formula smoothens strengthens and replenishes strands whilst blue lupin and optical brighteners restore luminous shine from root to tip a treat for naturally white or grey hair you can expect revitalised energised locks with added bounce