After reading the latest discussion on exterior teak, I thought I'd pass on a tip I accidenly learned about interior, unvarnished wood finish. Its a product called "HOWARD Feed and Wax". Its a blend of bees wax and orange oil. I've used it with great success on water stained wood both on the boat (1975 Catalina 30, #75) and on antique furniture at home. A 16 oz bottle is $5.00 at Home Depot and $7.00 at an Ace Hardware store. The bees wax makes it thick when cool and thin when warm. Again, works very good on any wood that has not been varnished. John G