The Nioxin Scalp Revitaliser 6 for Medium Thick Natural & Coloured Hair is a superb conditioner, designed with a unique lightweight formula that forties hair, without weighing it down. Nioxin have developed systems that are tailored for individuals needs. This Nioxin Scalp Revitaliser 6 for Medium Thick Natural & Coloured Hair is a high performance conditioner that revives your scalp & strengthens hair. Directions of use: After cleansing, distribute onto scalp & throughout the hair. Leave for 1-3 minutes. Rinse well.