What is an important instruction for parents to protect children from sunburns?

Reapplying sunscreen every 4 hours is crucial for effective sun protection, particularly for children, whose skin is more sensitive to UV rays. Sunscreen wears off due to factors such as sweating, swimming, and towel drying, which can diminish its protective qualities. Regularly reapplying sunscreen helps maintain the skin's defense against harmful radiation and significantly reduces the risk of sunburn and long-term skin damage.

Additionally, using a broad-spectrum sunscreen with an appropriate SPF level is vital for safeguarding against both UVA and UVB rays. The recommendation to use a higher SPF (usually at least 30) emphasizes the need for adequate UVA and UVB protection, especially in children.