Does the dark red handle color affect long-term display care?
Updated Mar 2026
Yes, in a few practical ways. If the tsuka is wrapped in dyed ito (cord wrapping), prolonged direct sunlight exposure can cause the red pigment to fade unevenly, particularly along the raised diamond-pattern intersections where the dye is thinnest. UV-filtering display cases or positioning away from south-facing windows will preserve the color longest. For dark red lacquered or rosewood handles, low humidity is the main concern — wood and lacquer both respond to moisture fluctuations that can cause minor surface checking over years. A climate-controlled interior environment (40–60% relative humidity) is ideal. The red tones in rosewood saya and handles are natural, not dyed, so they are generally more stable under normal indoor conditions.