Furniture Clinic Teak Brightener is a concentrated solution designed to restore and enhance the natural color of teak wood. When diluted with water at a 1:1 ratio, it creates 1 litre of professional-strength brightening solution. This product is ideal for older, worn, grey, and weathered teak, further enhancing its natural beauty and color after cleaning. It effectively lightens old, blemished teak, improving its overall appearance and preparing it for further treatment with Teak Oil. For teak in good condition or only slightly weathered, the cleaner alone may suffice. The Teak Brightener not only lightens but also removes rust marks and dark stains, leaving a brighter and more evenly colored surface. Its professional-strength formula deeply penetrates the wood grain to lift out discoloration. Regular use can extend the life of your wooden surfaces, keeping them looking like new. It is safe for use on both treated and untreated outdoor wood, including garden furniture, marine teak, and decks. Furniture Clinic offers a satisfaction guarantee.