Does Sunscreen Block Vitamin D? What the Research Shows
Lab studies show sunscreen can reduce vitamin D production, but real-world trials and reviews find little effect. What that means for your skin and your vitamin D.
Trusted anti-aging guides backed by dermatological research
All articles tagged "sun protection".
10 articles
Lab studies show sunscreen can reduce vitamin D production, but real-world trials and reviews find little effect. What that means for your skin and your vitamin D.
Yes, sunscreen expires. The FDA three-year rule, how to check the date, how heat and storage affect it, and signs a bottle has gone bad.
Mineral and chemical sunscreens protect differently. Here's how to choose based on skin type, sensitivity, melasma, pregnancy, and practical cosmetics.
Protect and nourish your skin during summer with this anti-aging focused seasonal skincare guide covering SPF, hydration, and more.
Tinted sunscreens contain iron oxides that block visible light (400-700nm)—wavelengths that regular sunscreens don't protect against. Visible light, especi...
Combination SPF moisturizers are convenient, but a dedicated sunscreen usually gives more reliable UV protection because people apply it more evenly and generously.
How to plan anti-aging treatments around the seasons: why sun exposure matters for lasers and peels, what to do year-round, and a month-by-month checklist.
SPF in makeup provides some UV protection but typically falls short of adequate coverage. To achieve the stated SPF, you'd need to apply 1/4 teaspoon of fo...
Glasses-specific concerns: nose pad indentations (can become permanent creases), frames blocking sunscreen application around temples, and UV exposure thro...
How to protect skin during commutes, outdoor work, sports and swimming: sunscreen choice and reapplication, protective clothing, pollution and screen-light myths.