Permanent hair colour Deliver rich, vibrant colour with the Inoa permanent hair tint. Offering up to 100% white hair coverage to ensure beautiful, natural looking results, the professional hair colour is perfect for natural and colour treated hair. ODS2 technology Enriched with innovative ODS2 technology, this nourishing formula provides optimum scalp comfort with an ammonia free solution that helps to prevent damage and enhances hair treatments with a pleasant, odourless scent. The rich formula nourishes the hair for a silky smooth finish.