NAF Tea-Tree Oil Shampoo 1ltrNAF Tea Tree Oil Shampoo helps remove scurf and other build up leaving your horses' coat clean and fresh. Directions: Add 20ml per litre of water or wet coat and apply directly. Work into a lather to ensure thorough cleansing and rinse well. Replace lid after use. NAF recommend a small patch test prior to initial use. Store in a dry place. For animal use only. For external use only