If the sunlight we normally see has no effect on our skin, this colorless photon is called ultraviolet light. It can damage our skin. it is clear that UVA causes collagen damage (aging) and the skin loses elasticity.
While UVB makes sunburned skin. Therefore, our skin should be covered with a protective so-called sunscreen. Sunscreen can create a protective boundary on the skin by absorbing or reflecting photons before DNA absorbs them.
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Thanks for this comment, it is a nice summary of the entire post!