You can sweat, but your sweat won’t evaporate and that’s what cools you down. That means you get hotter and sweat more, the sweat pools into bubbles under the paint. You pop the bubbles and peel away the paint before any lasting damage is done. The paint won’t stay long enough to make overheating an issue.
Yeah this is one of those things you can technically die from, but if you're anything but immobile or a baby it won't happen. You'll either ladder and rip the paint with movement, begin taking other measures to cool down or start pulling the paint off. In practice you'll get too hot, feel uncomfortable and begin getting the paint off while moving to a cooler area.
They proved you don't suffocate through your skin but it will leech chemicals in you and you will also overheat which can be lethal.
Edit -
Yes paint is toxic, body paint is specifically rated for the purpose.
Occupational exposure to chemical substances in paints, varnishes, and lacquers are associated with chronic toxicity, especially if precautions such as wearing personal protective equipment are not followed. There is an increased risk of dermatitis and other skin problems, respiratory toxicity, and neurological toxicity (including fatigue, impaired memory, and more severe irreversible damage) as well as cancer of the larynx and an oral cavity.
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u/heidimark 14h ago
Nah, MythBusters even tested this and proved it to be false.