You stopped sweating
Sweating is your body’s way of regulating your temperature and cooling you down. If you’re not sweating after spending time in the sun and your skin feels hot and dry, you may be experiencing heat stroke, a potentially life-threatening condition which can cause damage to your organs and brain. Get out of the sun (preferably to a cool indoor space) and call for medical attention immediately. Sponge your skin with cool water and if ice packs are handy, apply them to your skin. These are sunscreen mistakes everyone makes.
You’re seeing wrinkles
Wrinkles are typically a sign of aging, but may also be a sign of collagen and fiber breakdown caused by overexposure to UV rays. If you’re worried about the onset of wrinkles, take precautions to limit sun exposure and diligently apply sunscreen or sun-blocking clothing when outside.