Denver's Sunscreen Lie: Altitude Hiding Burn?
By Franklin Everett ShawHave you ever felt the sun burning your skin in Denver, even on a seemingly mild day? You’re not alone. Many believe the Mile High City’s altitude somehow hides the sun’s harmful rays. This is a dangerous myth. In reality, Denver’s elevation significantly increases your risk of sunburn and long-term skin damage.
The truth is, for every 1,000 feet you ascend, UV radiation levels increase by approximately 4-5%. Denver sits at 5,280 feet above sea level. This means you’re exposed to roughly 20-25% more UV radiation than you would be at sea level.
This isn’t just a theoretical concern. It’s a real and present danger for Denver residents and visitors alike. We need to understand why this happens and, more importantly, what we can do to protect ourselves.
The primary reason for increased UV radiation at higher altitudes is the thinner atmosphere. There’s less air to absorb and scatter the sun’s rays. This means more harmful UVB and UVA radiation reaches your skin.
Think of the atmosphere as a filter. At sea level, that filter is thicker, blocking more of the sun’s harmful rays. In Denver, the filter is thinner, allowing more radiation to pass through.
Snow, a common sight in Denver, further exacerbates the problem. Snow reflects up to 80% of UV radiation. This means you’re getting hit with UV rays from above and below, significantly increasing your exposure.
Even on cloudy days, UV radiation can penetrate clouds. Don’t be fooled into thinking you’re safe just because the sun isn’t directly visible.
So, how do we protect ourselves in Denver’s high-altitude environment? Sunscreen is your first line of defense. But not all sunscreens are created equal.
You need a broad-spectrum sunscreen with an SPF of 30 or higher. Broad-spectrum means it protects against both UVA and UVB rays. SPF 30 blocks 97% of UVB rays.
Look for sunscreens containing zinc oxide or titanium dioxide. These are mineral sunscreens that provide excellent broad-spectrum protection and are generally considered safer for your skin and the environment.
Apply sunscreen liberally and evenly to all exposed skin. Don’t forget often-missed areas like your ears, neck, and the tops of your feet.
A common mistake is not applying enough sunscreen. Most adults need about one ounce (a shot glass full) to cover their entire body.
Reapply sunscreen every two hours, or more frequently if you’re sweating or swimming. Even water-resistant sunscreens lose their effectiveness over time.
Consider using a lip balm with SPF. Your lips are particularly vulnerable to sun damage.
Beyond sunscreen, sun-protective clothing is crucial. Look for clothing with an Ultraviolet Protection Factor (UPF) rating.
UPF indicates how much UV radiation the fabric blocks. A UPF of 50 means the fabric blocks 98% of UV rays.
Long-sleeved shirts, pants, and wide-brimmed hats offer the best protection. Darker colors generally provide better protection than lighter colors.
For hiking in the foothills or skiing in the Rockies, consider specialized sun-protective clothing. Many outdoor retailers in Denver offer a wide selection of UPF-rated apparel.
Companies like Patagonia and Outdoor Research offer excellent options. Look for lightweight, breathable fabrics that will keep you cool and comfortable while providing sun protection.
Sunglasses are also essential. Choose sunglasses that block 100% of UVA and UVB rays.
Wrap-around styles offer the best protection by preventing sunlight from entering from the sides.
Polarized lenses can reduce glare, especially when skiing or snowboarding.
Protecting children is especially important. Their skin is more sensitive to sun damage.
Dress children in sun-protective clothing and apply sunscreen liberally. Teach them about the importance of sun safety from a young age.
Remember, sunburn is not just a cosmetic issue. It’s a sign of skin damage that can increase your risk of skin cancer.
Skin cancer is the most common type of cancer in the United States. Early detection is key to successful treatment.
Regularly check your skin for any new or changing moles or spots. See a dermatologist if you have any concerns.
Denver’s altitude offers incredible opportunities for outdoor recreation. But it also presents unique challenges when it comes to sun protection.
Don’t let the myth of the “hidden sun” fool you. Take sun safety seriously and protect your skin from the harmful effects of UV radiation.
By following these guidelines, you can enjoy all that Denver has to offer while staying safe in the sun. Remember, prevention is always better than cure.