Light fastness, rub fastness are the main forms of colour fastness that are standardized.
2.
The kermes dye is a rich red, and has good colour fastness in silk and wool.
3.
"' Colour fastness "'is a term used in the dyeing of textile materials that characterizes a material's colorfast " was in 1916.
4.
Vitreous enamel has many useful properties : it is smooth, hard, chemically resistant, durable, scratch resistant ( 5-6 on the Mohs scale ), has long-lasting colour fastness, is easy to clean, and cannot burn.
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