How should I care for a lacquered hardwood saya long-term?
Updated Mar 2026
Lacquered hardwood saya are sensitive to two primary environmental threats: humidity fluctuations and UV exposure. Excessive moisture can cause the wood substrate to swell, potentially cracking the lacquer finish, while prolonged direct sunlight will bleach and dull even high-quality urushi-style lacquer over time. Store your piece in a stable interior environment, ideally between 40-60% relative humidity. Avoid placing it near windows, fireplaces, or air conditioning vents. If the saya surface begins to look dull, a very light application of Renaissance Wax or a specialist lacquer preservative can revive the sheen without damaging the finish. Never use solvent-based polishes on lacquered surfaces.