Dry skin: Long-term exposure to the sun will dry the water in the skin, resulting in dry, rough and unhealthy skin.

Increase skin aging: long-term exposure to the sun will produce more free radicals in the skin, which will lead to accelerated aging of skin cells and make the skin look older.

Increase the risk of skin cancer: long-term exposure to the sun, skin sunburn may lead to cell mutation, increasing the risk of skin cancer.

Make the skin black: Long-term exposure to the sun will make the skin black, especially if you don't take sunscreen measures for a long time.

Therefore, in order to protect the skin, sun protection measures should be taken before exposure in the sun, such as using umbrellas, hats and sunglasses.