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Photochromism is the reversible change of a substance category between two structures by the assimilation of electromagnetic radiation, where the two structures have different absorption spectra. Trivially, this can be portrayed as a reversible change of shading upon presentation to light.


SFXC® offer a broad range of organic photochromic dyes for sun and UV protection. Photochromic materials exhibit a change colour when exposed to UV rays and sunlight. This amazing technology can now be used to protect your eyes from harmful UV rays.

Photochromic Optical Dye


Photochromic dyes are used in the manufacture of UV protective film, plastics and solvent based coatings. Before the photochromic dyes function, they must first be diluted with a resin, polymer or solvent.

The following photochromic dyes are available with an MOQ of 100g:

  •     Purple
  •     Blue
  •     Magenta
  •     Yellow
  •     Orange
  •     Magenta

For use in solvent based inks:

Before the photochromic dye (white powder) can be added to the medium, it must be diluted in one of the following solvents, Toluene, Dichloromethane, Acetone, MEK, EA, IPA and DMF. Toluene and Dichloromethane are preferred for the manufacture of solvent based inks and paints. The dyes can not be used in the manufacture of water-based systems. A microencapsulated dye (photochromic pigment) must be employed in the production of water-based inks and paints.microencapsulated dye (photochromic pigment) must be used in the production of water-based inks and paints.

Concentration for inks and paints = %0.01 is required for 0.2cm of plastic thickness

For use in Injection and extrusion:

Photochromic dye can be directly added to any of the following carriers, PP, PE, PVC, PU, PS, ABS, TPR, Nylon, PMMA and EVA
Concentration for injection and extrusion = %0.01 is required for 20μm film thickness

Please thoroughly test these products before committing to production, print runs or final projects.

When UV hits the coated item, a colour will appear. The shade of colour it changes to depends on the strength of the UV index.

Please contact us for further information and pricing.

Avoid long term UV exposure.

Please view the TDS and MSDS before use.

All information if given as a guide and without warranty.

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