Testing, Fastness, and Documentation
Trust comes from trials. Build lightfast ladders on windowsills, pairing protected halves with exposed swatches. Wash-test siblings in basins that mimic your life. Note WOF, temperatures, pH, mordant paths, and water source. Orchil may fade, tannin browns endure, and willow golds surprise. Share your findings; a community archive lifts every dyer higher than any summit.