How Japanese craftsmen traditionally polish and care for wood furniture

Japanese furniture care starts from a different premise than most Western advice: the goal is not a hard, glossy shell but a soft patina (tsuya) that develops from years of oiling and handling. Lacquerware aside, most everyday tansu, chabudai, and keyaki pieces were finished with little more than tsubaki abura (camellia oil) or a thin wax—never polyurethane or modern sealants, which trap moisture and dull the wood's ability to breathe. The basic routine: dust first with a soft uchibake brush or dry cloth, working with the grain to avoid scratching. Wipe down with a barely damp cloth, then dry immediately—standing water is the enemy of any unsealed surface. Every few months, apply a few drops of camellia oil to a cotton cloth and work it into the grain in small circular motions, then buff dry with a second cloth until the shine comes from friction, not residue. Hinoki and sugi pieces need less oil and more airflow; keyaki and other hardwoods used for tansu chests tolerate oiling more often. Seasonal humidity matters as much as the finish. Japan's wet summers swell joinery, while dry winters with heating can shrink it and loosen drawers—many old tansu use wooden mortise-and-tenon joints like hozo tsugi rather than nails, precisely so the frame can flex slightly instead of cracking. If a drawer sticks, resist forcing it; rub a candle stub or beeswax along the runners instead of sanding. Deep scratches in oil-finished wood are often buffed out with fine steel wool and a fresh coat of oil rather than refinished, which is why well-kept antique pieces can look decades younger than their age. What you should never do: apply spray polish with silicone, seal the wood in plastic wrap for storage, or leave a piece in direct sun, which bleaches unsealed wood unevenly. Treated this way, a solid wood table or chest can be re-oiled and handed down for a century rather than replaced.