DEFY Deck Stain for Hardwoods is formulated with smaller resins that penetrate hardwoods, or oily softwoods better. If you’re looking for the best stain for cedar decks in a water-based product, then look no further. DEFY Deck Stain for Hardwoods is a synthetic, semi-transparent deck sealer specifically formulated for use on cedar, mahogany, redwood, and other dense or difficult to penetrate woods.