Logona Hair Colour Powders are especially gentle semi-permanent hair colours utilising 100% natural colourants derived from pure plant extracts. Logona Hair Colours do not contain any harsh chemicals, bleaches or colourants and are PPD, Ammonia and Peroxide free. Effectively cover gray hairs and is ideal for colouring new growth as the natural formulation will nourish your hair. Logona Herbal Hair Colours will stay in your hair for about 5 to 7 weeks dependant on the frequency and aggressiveness of your shampooing.