Colour fastness

On the upper and lower part of the panel the former colour is visible. This panel's dye is not colour fast.

Colour fastness is a term used in the dyeing of textile materials, meaning resistance of the material's colour to fading or running. The term is usually used in the context of clothes. The first known use of the word colorfast was in 1916.^[1] In general, clothing should be tested for colourfastness before using bleach or other cleaning products.^[2] Light fastness, wash fastness, and rub fastness are the main forms of color fastness that are standardized.

The light fastness of textile dye is categorized from one to eight and the wash fastness from one to five. The higher the number the better fastness is obtained.^[3]

References

↑ "colorfast". Retrieved December 1, 2011.
↑ "Colorfastness". Retrieved December 1, 2011.
↑ Oger, B. (1996). "Fastness to Light and Washing of Direct Dyes for Cellulosic Textiles". Studies in Conservation 41 (3): 129. doi:10.2307/1506527. JSTOR 1506527.

External links

Dyeing

Techniques	Batik Dyeing Ikat Kalamkari Katazome Leheria Mordant Reactive dye printing Resist Ring dyeing Rōketsuzome Shibori Tie-dye Tsutsugaki

Types of dyes	Dyes Natural Acid Reactive Solvent Substantive Sulfur Vat Disperse

Traditional textile dyes	Armenian cochineal Black walnut Bloodroot Brazilin Cochineal Cudbear Cutch Dyewoods Fustic Gamboge Henna Indigo Kermes Logwood Madder Polish cochineal Saffron Turmeric Tyrian purple Weld Woad

History	Use of saffron In Scottish Highlands

Craft dyes	Dylon Inkodye Procion Rit

Reference	Glossary of dyeing terms List of dyes

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