The Science of Sunscreen
As the summer sun rises higher and days grow longer, sunscreen becomes an essential part of daily life—not just for beach days, but for any time spent outdoors. Protecting your skin from harmful ultraviolet (UV) radiation is about more than avoiding sunburn; it’s a key defense against premature aging, sun damage, and skin cancer. UV light is categorized into UVA and UVB—UVA penetrates deep into the skin and contributes to aging, while UVB is the primary cause of sunburn. Sunscreens work by using active ingredients that either absorb UV rays (like avobenzone or oxybenzone) or physically block them (like zinc oxide and titanium dioxide). Though early civilizations used natural oils and minerals for sun protection, modern sunscreen formulations began to take shape in the 1930s, with PABA-based products leading the way. Over the years, sunscreen has evolved to offer broad-spectrum protection, improved water resistance, and more skin-friendly formulas. Today, researchers continuing to innovate with new UV filters and eco-conscious ingredients that protect both people and the planet.
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