lightfast

Adjective

Meaning

lightfast (comparative more lightfast, superlative most lightfast)

Resistant to fading.
Verdigris is lightfast in oil paint, as numerous examples of fifteenth-century paintings show.

Source: en.wiktionary.org

Synonyms

colorfast unfadeable nonfading

Examples

Dyes At one time acridine dyes were commercially significant, but they are now uncommon because they are not lightfast. Source: Internet

This means: * Only pastels with lightfast pigments are used. Source: Internet

Close letter words and terms

lightest noble gas lightface lightfaced lightfastness lightfield lightfield camera