Answer:
Based on my knowledge on personal care products like sunscreen, it's job is to protect the skin. They play an important role in blocking ultraviolet radiation/rays from being absorbed by the skin. Ultraviolet radiation/rays damages the skin and can lead to sunburns and skin cancer. X-rays and gamma rays are commonly used in radiotherapy because X-rays and gamma rays have the same properties and health effects, they are grouped together in this document. Both x-rays and gamma rays are forms of high-frequency ionizing radiation, which means they have enough energy to remove an electron from (ionize) an atom or molecule.
