Irreversible Photochromic

UV warning band color changes due to the sun UV radiation accumulation.


The ability to have irreversibly change color as function of predetermined dose of UV radiation is very useful in developing simple and affordable UV dosimeters.

The company has developed new non-toxic organic Photochromic dyes that can be incorporated into a variety of commercial polymers and paints using conventional manufacturing methods, such as injection, extrusion, coating and printing.

Other advantages include color diversity and cost effectiveness.

The first commercial application in this category is a personal disposable warning wristband that by color change warns the user of overexposure to the sun’s harmful UV radiation.

The wristbands are designed to work when coated with sunscreen. They are manufactured with sensitivity suitable for adults with fair to medium skin color and for children of any skin type (for more information see FAQ).

The Company is now extending the use of this technology to other applications, in areas such as agriculture and industries that routinely use UV artificial radiation in their manufacturing processes.

Another potential application is the use of irreversible Photochromic to print barcodes, as an extra anti-counterfeiting measure.