What is it: Tinted Hair Colour Treatment. Best for: Coloured or non-coloured hair. O&M CLEAN.tone helps to keep your hair colour looking fresh, nourished and shiny like you have just visited your colourist. PLATINUM BLONDE Recommended to help maintain clean blonde tones on light blonde to lightest blonde hair. Helps eliminate unwanted yellow tones from the hair. Recommended for hair colour levels 8-10. Can be used on lightened and natural white/grey hair.