• Colour Expert since 1899
  • 10 Exclusive Brands
  • Let's Empower Creativity

Royal Talens respects the privacy of your information

We use functional cookies to anonymously analyse your use of our website so that you get a flawless and optimized website. Via personalization cookies we can adjust the website to your preferences and behavior.

If you want to know more about which cookies we place or if you want to reset it, go to our cookie page and privacy statement.

Functional cookies ensure that you get an error-free and optimized website.
These cookies are used to tailor advertisements to your interests, both on royaltalens.com and on other websites. They also offer the possibility of making newsletters relevant to you personally.
Social media cookies ensure that you can post comments and share information with your friends and / or your network.
Lightfastness
Tips & Techniques

Lightfastness

Tuesday, March 31, 2020

The degree of lightfastness of a colour indicates the extent to which a colour-giving substance is damaged by ultraviolet light.

Ultraviolet light is a component of both daylight and artificial light. It has the ability to breakdown colouring substances; the colour 'fades'. How quickly this happens depends on the lightfastness of a colouring substance in combination with the amount of ultraviolet light. Some colours begin to fade after only a few days, others after many years or even never.

The symbols of Royal Talens should be read as follows:
º       = 0 - 10 years lightfast under museum conditions
+      = 10 - 25 years lightfast under museum conditions
++    = 25 - 100 years lightfast under museum conditions
+++  = at least 100 years lightfast under museum conditions