Does Lower UV Exposure in Winter Mean We Should Reduce SPF Use?
This article is part of a special series exploring essential skincare topics.
Despite living far from the equator, experts recommend year-round sun protection factor (SPF) application to defend skin against premature aging and wrinkles. But is this advice scientifically sound?
Surprisingly, only 13.5% of adults in the U.S. incorporate SPF into their daily skincare routines. This negligence is particularly concerning during the summer when UV exposure peaks. Even without visible signs of sunburn, UV rays can penetrate deeper skin layers, causing damage that leads to wrinkles and increases the risk of skin cancer. Research shows that individuals who consistently wear sunscreen enjoy significantly lower risks.
Photoageing is a cumulative effect that adds up over the decades
However, it’s crucial to recognize that UV rays weaken during winter months at higher latitudes, prompting a reevaluation of SPF application. While SPF provides essential protection, its use may inadvertently contribute to vitamin D deficiencies. Moreover, the environmental impact of sunscreens is an important consideration, as some ingredients can wash into oceans, negatively affecting marine ecosystems.
Researchers are analyzing historical climate data to better understand the implications of seasonal UV exposure and its influence on skincare recommendations. Stay tuned for more insights on this vital topic.
