Semco Cleaner and Brightener is the Premium teak cleaning product used by professional detailers on Furniture and Vessels including Superyachts. The use of these products is a two step process that involves wetting the teak surface with water, applying Part 1 (cleaner) agitating it with a soft bristle broom, leaving it on for 10 minutes (do not let it dry) rinsing it off and then immediately applying Part 2 (brightener) and sit back and watch the teak transform into a beautiful clean finish without sanding. After 10 minutes rinse it off, let the teak dry and then proceed to the sealing process 48 hours later after the teak has fully dried.