For badly weathered, grey or black teak, apply Aqua Teak's Teak Cleaner and Brightener directly to dry wood. Made to restore the naturally-beautiful tone of teak wood, our exclusive brand of teak cleaner allows you to keep your teak furniture looking great and remaining functional for years. For regular teak furniture care, use a stiff bristle cleaning brush to spread product evenly. Allow product to remain on surface for approximately two to three minutes before scrubbing in the direction of wood grain. Rinse thoroughly with fresh water. Extremely dirty wood may require a second application and more scrubbing.