What percentage of sun damage occurs before the age of 18?

The percentage of sun damage that occurs before the age of 18 is widely considered to be around 80%. This statistic highlights the importance of early sun protection, as many individuals begin to accumulate sun exposure at a young age, often without adequate protection. The skin of younger individuals is more susceptible to the harmful effects of UV radiation, which can lead to both immediate issues, such as sunburn, and long-term problems like premature aging and an increased risk of skin cancer. Understanding that a significant portion of cumulative sun damage happens during childhood and adolescence emphasizes the need for preventative measures, such as using sunscreen and wearing protective clothing, at an early age to safeguard skin health over a lifetime.