Sun & Protection Blog

Health

Vitamin D and Sunlight: How Much Sun You Need and at What UV Index

90% of vitamin D is made in the skin under UVB rays. We explain at what UV index synthesis happens, how many minutes of sun you need, why winter sunlight doesn't work and if SPF interferes.

📅 16 August 2026 SPF Protection

SPF for Children: Which Sunscreen to Choose and How to Apply Properly

Children's skin burns 3–5× faster than adults'. We cover from what age SPF is allowed, which filters to pick (mineral), how much to apply and what besides SPF protects your child.

📅 15 August 2026 Protection

UV400 Sunglasses: What the Label Means and Why Dark Lenses Without UV Filter Are Dangerous

UV400 blocks 100% of UVA and UVB. We explain why dark glasses without UV protection are dangerous, how to read labels and tint categories, and when sunglasses are mandatory.

📅 14 August 2026 Tanning

Solarium vs Sun: Which Is More Dangerous and the Truth About "Safe" Tanning

WHO classifies tanning beds as Group 1 carcinogens — same as tobacco. We compare spectrum, doses and risks of solarium vs sun and explain why a "base tan" before vacation doesn't protect.

📅 13 August 2026 SPF Protection

SPF 30 vs 50: What's the Real Difference and Which to Choose

SPF 30 blocks 97% of UVB, SPF 50 blocks 98%. We break down what SPF numbers mean, how sunscreens differ in practice, and which one to pick for your UV index, skin type and season.

📅 12 August 2026 WHO Scale

How to Read the UV Index: WHO Scale 0–11+ Explained

The UV index scale from 0 to 11+: what each value means, what SPF to use, when to seek shade and how your skin type changes the burn time.

📅 10 August 2026 Science

UV Index vs Weather: Why Hot Day ≠ High UV

Temperature and UV index are independent. We explain why you can burn on a cold day, how clouds affect UV, and why a cloudy beach day still requires SPF.

📅 8 August 2026 SPF Protection

SPF 70 vs 50: Does Higher SPF Really Matter?

SPF 70 blocks about 98.6% of UVB vs 98% for SPF 50. We explain if it's worth paying more, what matters more than the number, and which labels to look for on packaging.

📅 5 August 2026 SPF Protection

10 Sunscreen Myths That Can Get You Burned

"Dark skin doesn't need SPF", "makeup with SPF is enough", "one application lasts all day" — we debunk the most common and most dangerous sunscreen myths with science.

📅 1 August 2026 Tanning

Best UV Index for Tanning: Can You Tan at 2–3 and How to Avoid Burns

You can tan at any UV index above 0. We explain the best UV for tanning, how long it takes at 2–3, 4–5 and 6+, and why high index gives burns, not a tan.

📅 28 July 2026 Science

Highest UV Index Ever Recorded: Where, When and What It Means

The highest UV index ever measured at Earth's surface is above 20 — in the Andes. We explain where UV hits 12, 14 and beyond, and why equator alone doesn't determine it.

📅 25 July 2026 WHO Scale

UV Index 11–12: What It Means, Where It Occurs and What to Do

11+ is the extreme WHO category; 12 is practically the maximum at Earth's surface. Where UV index 12 occurs, whether it happens in Europe, and how to protect yourself at such values.

📅 20 July 2026 Planning

UV Index Tomorrow: How to Plan Outdoor Activities Safely

How to use tomorrow's UV forecast to plan beach trips, outdoor sports and walks. When to reschedule, what SPF to pack and the 3-hour window rule.

📅 15 July 2026 Skin Health

Photoaging from the Sun: How UV Ages Your Skin and How to Prevent It

Up to 80% of visible skin aging is caused by UV. We break down how UVA destroys collagen, how photoaging differs from natural aging, and what protection actually works.

📅 12 July 2026 SPF Protection

Face vs Body Sunscreen: Do You Really Need Two Different Products?

Face sunscreens cost 2–5× more than body ones. We break down whether the difference is real, when you can use the same product, and what to look for in each.

📅 5 July 2026