Craft · 6 pages · 12 min
Plant dyes and many synthetic dyes lose color by different bonds, so light and washing do not treat them the same.
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A natural dye is a molecule taken from a plant, insect, or mineral, often held by a mordant or by a physical trap. Many synthetic dyes were built to bond to a specific fiber or to survive light, so the two families fail under sun and soap in different ways. The opening covers attachment decides wash fastness, light breaks the chromophore, and indigo wears from the surface.
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