Yes. Sweat can be absorbed through the skin, particularly when you are exercising or in hot conditions. This makes your skin more susceptible to sunburn and other skin damage such as dry patches (also known as xerosis).
What is an epithelial burn? How do I treat it?
Epithelial burns appear like blisters but unlike blistering they don’t break open with pressure from rubbing. They occur on the surface of the skin and usually heal quickly by themselves without any topical treatment needed. Epithelial burns will not blister and may peel after some time if left untreated — although this may cause scarring or discolouration of the area that needs to be treated accordingly!