Caring for outdoor teak furniture can be as easy as brushing off surface grime once a year and rinsing with a garden hose. Left alone outdoors, teak will gradually soften in color to a silvery grey as surface oil evaporates. DWR suggests that approach for the easiest maintenance and excellent appearance. A teak protector may be used to condition weathered teak, sealing it against moss growth, promoting an even appearance and protecting it against spills. Finally, for those who prefer the “new” look of teak, a teak sealer is recommended, although once that path is taken, it will have to be repeated a couple of times a year to maintain the appearance. Sealer does not lengthen the life of the furniture in any way, merely the appearance. Never paint or varnish teak.