Thompson's WaterSeal THC052503-16 Deck Cleaner and Brightener, Liquid, Green, 3.78 L, Can

Cleans all wood types but is specially formulated for redwood, cedar, mahogany and other highly extractive woods. While many cleaners can darken these woods, this deck cleaner actually helps restore their natural color and beauty. Deck cleaner & brightener also acts as a neutralizing agent after using some cleaners.