We engineered the bandgap of our Enhanced Sunblock™ to maximize absorbtion over the ultraviolet and deep blue spectrum (the green absorption spectrum line in the graph to the right). It is designed for enhanced absorption of high-energy light for use in protecting materials and people from their harmful effects, rather than for photocatalysis.
For example, titania is currently used in sunscreen to absorb the ultraviolet before it can reach our skin to do damage. But the deep blue rays that are not blocked by titania are blocked instead by organic compounds in the sunscreen. Evidence is mounting that these compounds can form carcinogens in the process of absorbing the blue light.
Our Enhanced Sunblock™ powder absorbs nearly all the ultraviolet as well as the deep blue, eliminating the need for organic compound absorbers.
And because it is titania, it remains inert in the process.