For the restoration of weathered, gray teak to its original color use this Teak Cleaner (1 liter). It is a 2-in-1 cleaner and brightener that is only a 1 step process. This product is highly concentrated for a deep penetrating cleaning for longer lasting results. This Teak Cleaner restores weathered teak to its original color. It is water-based, non-flammable and environmentally friendly.