I am not so sure this time but I will answer anyway. I think, Ultraviolet Rays are more dangerous to our skin because they have more frequency and energy than Visible light. This is the order of waves from the highest frequency to the lowest frequency.
-Gamma rays
-X-rays
-Ultraviolet waves
-Visible light
-Infrared Waves
-Microwaves
-Radio waves
I know it is not enough but I will answer anyway.