Question

the infrared rays in sunlight can cause sun bearns

Answer 1

Ultraviolet light comes from the sun, but it can also bounce off of other surfaces like water, snow, and concrete. ... Sunblock contains chemicals that can reflect or absorb the ultraviolet light, leaving your skin sunburn free. That way you can enjoy the other energy from the sun, visible light and infrared warmth

Answer 2

Sunburn is the clear sign that the DNA in your skin cells have been damaged by too much UV radiation.

You can't feel UV rays, but the heat that comes from intrared rays, which can't burn you but cause damage to your skin cells.

Hope this answer will help you.