The far ultraviolet rays are harmful to human health, particularly for their mutagenic effects; it can cause skin cancer, cataracts, photochemical pollution. In the future, chemists plan to use it as weapons for the destruction of objects. Therefore, we should meet this future challenge by scientific means in order to snuff out its far-ultraviolet rays.

In this paper, we’ve intend to carry out a deep spectral study on a series of red dyes such as: beet red; congo red; methyl red; neutral red; phenol red and carminic acid, to find out which are able to damage far ultraviolet rays by absorption. The experimental results have been carried out in our laboratory; it has shown that certain red pigments have an ability to absorb light in the far ultraviolet range due to their chemical structures. Therefore, they are able to dodging far ultraviolet rays. Moreover, the spectral analyzes by the emission of the series of red dyes studied, have showed that these red dyes emit beyond 600 nm.