DermUV
UV Safety and Sunscreen Science Blog
The DermUV journal builds supporting topical coverage around the city UV pages and calculators.
Latest guides
Read plain-English, source-backed articles that answer common UV and sunscreen questions.
- The UV Index Explained: What the Numbers Actually Mean
- Sunscreen Science: SPF, PA+++, Mineral vs Chemical
- Skin Cancer Prevention: A Realistic Daily Plan
- Seasonal Sun Exposure: Why Winter UV Still Matters
- The Fitzpatrick Skin Type Scale: Find Yours Honestly
- UVA vs UVB: What Each Wavelength Actually Does
- Kids and Sun Safety: An Evidence-Based Plan
- Vitamin D and the Sun: What's True, What's Hype
- Tanning Beds: Why Dermatologists Don't Use the Word 'Safe'
- Post-Sun Skin Care: What Actually Helps After Exposure
- Does UV Get Through Windows? UVA, UVB, and Driving
- What Time of Day Has the Lowest UV?
- UPF Clothing: What the Numbers Mean and When It's Worth It
- Sun Safety for Kids: Babies, Toddlers, and Teens
- How to Get Vitamin D Without Burning
- Snow, Altitude, and 'Snow Blindness' — Why Winter UV Bites
- Tanning Beds and Skin Cancer: What the Data Actually Shows
- Reef-Safe Sunscreen: What's Banned, What's Better
- Does Sunscreen Expire? Storage, Shelf Life, and the Heat Problem
- How to Do a Monthly Skin Self-Exam (in 10 Minutes)
- How Long Does It Take to Get Sunburned? (By UV Index and Skin Type)
- What UV Index Is Safe to Tan In? (Honest Dermatology Answer)
- Do You Need Sunscreen on Cloudy Days? (Yes — Here's Why)
- The Best Time of Day to Get Vitamin D from the Sun (Without Burning)
- How Much Sunscreen to Apply (and Why Most People Use Way Too Little)
- Melanoma Warning Signs: What to Look For and When to Act
- Choosing a Daily Face Sunscreen: What Actually Matters
- Reef-Safe Sunscreen: What the Label Actually Means
- Sunscreen in Pregnancy: What's Safe, What's Debated
- Sunscreen for Dark Skin: Beyond the White Cast
- How to Treat a Severe Sunburn: An Evidence-Based Timeline
- UV and Your Eyes: Cataracts, Pterygium, and the Sunglasses You Actually Need
- Sun Poisoning vs Sunburn: When It's Serious
- Sun Safety for Outdoor Workers: A Job-Site Playbook
- Rosacea and Sun: Why UV Is the #1 Trigger