Sunlight causes pigment colors to fade through photochemical degradation.
the verdict
SUPPORTED
the evidence backs this
confidence 83/100
Sunlight causes pigment colors to fade through photochemical degradation, a well-documented phenomenon impacting everything from historical plastics and food colorants to tattoo inks.
Evidence for · 3
Characterization and Long-Term Stability of Historical PMMA: Impact of Additives and Acrylic Sheet Industrial Production Processes.
2020 · cited by 17
Demonstrates that artificial solar aging of colored acrylic sheets leads to material and color alterations.
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More for · 2
Incorporation in Lipid Microparticles of Acid Red 87, a Colorant Used in Tattoo Inks: Effect on Photodegradation Under Simulated Sunlight and Laser Radiation
2020 · cited by 5
Shows that tattoo colorants undergo photodegradation and decompose when exposed to simulated sunlight.
Impact of Conventional and Advanced Techniques on Stability of Natural Food Colourants.
2025 · cited by 2
Notes that natural food colorants suffer from instability and degradation when exposed to environmental stressors such as light.