Apply to wet hair, lather and massage into the hair. Leave for 1 to 5 minutes. Rinse thoroughly and repeat if necessary. Ultra Blonde takes very quickly to pre-coloured or bleached hair. In this case, mix with MUVO Totally Naked Shampoo for the desired tone. Follow with MUVO Ultra Blonde Conditioner. Use once or twice weekly or as required to control brassiness. Product may stain absorbent material. If in eyes wash out immediately with water.