Non-toxic molecular wood-colouring process that permanently dyes wood fibers without pigments, binders, fillers, plastics or toxic chemicals, preserving visible grain and delivering lightfast, durable (Martindale up to 100,000), repairable and recyclable coloured wood in black, brown, grey, yellow, green and more. Designed for furniture and wood-product manufacturers and designers to upcycle waste wood into profitable, eco-friendly finished products and avoid lacquer/plastic pollution.