Detailed answer

To prevent sunburn during outdoor activities, it is crucial to apply sunscreen with a high SPF (Sun Protection Factor) before going outside. Choose a broad-spectrum sunscreen that protects against both UVA and UVB rays. Apply it generously to all exposed skin, including your face, neck, ears, and any other areas that may be exposed. Remember to reapply sunscreen every two hours, or more frequently if you have been swimming or sweating. Additionally, wearing protective clothing such as hats, long sleeves, and sunglasses can provide extra protection against the sun. Seeking shade during peak sun hours (typically between 10 am and 4 pm) can also minimize your risk of sunburn. Keep in mind that even on cloudy days, UV rays can still penetrate through the clouds, so it's important to stay protected regardless of the weather conditions.