SunticSun-safety guides & UV index tips
Understand the UV index, protect your skin and make smarter decisions in the sun.
What is the UV Index?
The UV index is a simple 0-11+ scale for how strong the sun's UV radiation is. Here's what it measures, how to read it, and how to use it to protect your skin.
Read the guide →What is the UV Index?
The UV index is a simple 0-11+ scale for how strong the sun's UV radiation is. Here's what it measures, how to read it, and how to use it to protect your skin.
Read guide →How to Read the UV Index
Learning how to read the UV index takes a minute: match the number to a risk band, adjust your protection, and check it for your exact location.
Read guide →UV Index 1 to 11+ Explained
The UV index scale runs from 0 to 11+ across five risk bands. Here's what each band means, what to do at each level, and why your skin type matters.
Read guide →What the UV Index Means for Your Skin
The UV index tells you how strong the sun is, but what it means for your skin depends on UV type, your skin type, and how long you're exposed.
Read guide →Skin Types and the Sun: The Fitzpatrick Scale
Your skin type sets how fast you burn at a given UV index. Here's the Fitzpatrick scale of six phototypes, what each means, and why every type needs protection.
Read guide →The UV Index by Season: Why Winter Sun Still Burns
UV rises and falls with the seasons, yet cold can still bring a high index. Here's how season, latitude and altitude shape UV, and why temperature misleads.
Read guide →Best UV Index for Tanning
Looking for the best UV index for tanning? Here's an honest answer: there is no risk-free level, but lower UV means a slower tan and a lower chance of burning.
Read guide →Best Time of Day to Tan
Wondering about the best time of day to tan? UV peaks around midday, so morning and late afternoon are gentler windows, though UV is never truly zero.
Read guide →Tanning Safely With the UV Index
Tanning safely with the UV index means using the number to time and limit your sun exposure. No tan is completely safe, but you can lower the risk.
Read guide →How Tanning Actually Works: Melanin, UVA and UVB
A tan is your skin defending itself against UV. Here's how melanin, UVA and UVB darken skin, why a tan signals injury, and what it means for safer tanning.
Read guide →When Is the Sun Strongest?
The sun is strongest around solar noon, usually 10am to 4pm in summer. Here's how time, season, latitude and altitude affect UV, and how to stay safe.
Read guide →How Long Should You Stay in the Sun?
There's no single safe number of minutes in the sun. It depends on the UV index, your skin type and your SPF. Here's how to estimate your limit.
Read guide →Cloudy Weather and UV Rays
You can still get sunburnt on a cloudy day: clouds let much UV through, and broken cloud can even boost it. Check the UV index, not the sky.
Read guide →Sunburn Prevention Tips
Practical sunburn prevention tips: check the UV index, use broad-spectrum SPF 30+ properly, seek shade at peak hours, cover up and protect children.
Read guide →SPF and the UV Index Explained
What SPF really means, why broad spectrum matters, how much sunscreen to apply, and how to combine SPF with the UV index for smarter sun protection.
Read guide →How to Treat Sunburn: After-Sun Care That Works
Caught too much sun? Here's the evidence-based way to treat sunburn, from cooling and hydrating to what to avoid, plus the signs you should see a doctor.
Read guide →Vitamin D and the Sun: How Much Do You Really Need?
Sunlight helps your body make vitamin D, but with less exposure than most think. Here's how it works, why you can't bank it by burning, and what experts advise.
Read guide →How Much Sunscreen to Apply (and How Often)
Most people use far too little sunscreen, which quietly cuts their protection. Here's how much to apply, how often to reapply, and what SPF numbers really mean.
Read guide →UV Reflection: Water, Snow and Sand Burn Faster
The UV index measures the sky, but reflective surfaces add to your exposure. Here's how much snow, sand and water bounce back, and why you burn faster outdoors.
Read guide →UV and Your Eyes: Protecting Your Sight in the Sun
Your skin isn't the only thing UV harms. Here's how the sun affects your eyes, what to look for in sunglasses, and why UV400 matters as much as sunscreen.
Read guide →UV Index Myths, Debunked
Common UV index and sun-protection myths debunked: cloudy days, skin tone, cold weather, base tans, windows and the difference between UV and heat.
Read guide →Does a Base Tan Protect You From Sunburn?
A base tan feels like sensible holiday prep, but dermatologists call it a myth. Here's the SPF a tan really gives you, why it backfires, and what to do instead.
Read guide →Tanning Beds vs the Sun: Is Indoor Tanning Safer?
Sunbeds are sold as a controlled, safer way to tan. The evidence says otherwise. Here's how indoor tanning compares to the sun, and what the WHO concluded.
Read guide →Can You Tan Through a Window?
Glass blocks the UV that tans and burns but lets other rays through. Here's what happens behind a window or windscreen, and why drivers get one-sided damage.
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