Denver Haze: Are Mountain Hikes Killing Your Skin?
By Franklin Everett ShawThe sun feels different in Denver. It’s not just a feeling; it’s a tangible force, amplified by the city’s mile-high elevation and relentless sunshine.
Denver’s unique environment demands a different approach to sun protection, especially for those who love to hike in the surrounding mountains. Ignoring this reality can lead to painful sunburns, premature aging, and increased risk of skin cancer.
Let’s dive into how Denver’s altitude, UV index, and dry climate conspire to intensify sun damage, and what you can do to protect yourself.
Denver sits at approximately 5,280 feet above sea level. This altitude means the atmosphere is thinner, filtering less of the sun’s harmful UV radiation.
For every 1,000 feet of elevation gain, UV radiation increases by roughly 4-5%. That means Denver receives significantly more UV exposure than cities at sea level.
The UV index, a measure of the intensity of UV radiation, is often higher in Denver than in other parts of the country. This is especially true during the summer months.
Denver’s dry climate further exacerbates the problem. Dry air reflects more UV radiation than humid air.
This reflected radiation bounces off surfaces like snow, rocks, and even the ground, increasing your overall exposure.
The lack of humidity also dries out your skin, making it more vulnerable to sun damage.
So, what can you do to protect yourself while hiking near Denver? It starts with understanding SPF and using it correctly.
SPF, or Sun Protection Factor, measures a sunscreen’s ability to block UVB rays, the primary cause of sunburn. However, SPF doesn’t tell the whole story.
Many people don’t apply enough sunscreen. You should use about one ounce (a shot glass full) to cover your entire body.
Reapplication is crucial, especially when sweating or swimming. Reapply every two hours, or more frequently if needed.
Choose a broad-spectrum sunscreen with an SPF of 30 or higher. Broad-spectrum means it protects against both UVA and UVB rays.
Consider using a mineral sunscreen containing zinc oxide or titanium dioxide. These are generally considered safer for sensitive skin and the environment.
Don’t forget often-overlooked areas like your ears, neck, and the tops of your feet. These areas are particularly vulnerable to sun damage.
Beyond sunscreen, clothing and gear play a vital role in sun protection.
Wear lightweight, long-sleeved shirts and pants. Look for clothing with a UPF (Ultraviolet Protection Factor) rating.
A wide-brimmed hat is essential for protecting your face, ears, and neck. Choose a hat with a brim of at least three inches.
Sunglasses are crucial for protecting your eyes from UV radiation. Look for sunglasses that block 100% of UVA and UVB rays.
Consider using a neck gaiter or bandana to protect your neck and face. This is especially important on windy days.
Hiking above treeline in the Colorado Rockies presents unique challenges. The lack of shade means you’re exposed to intense sunlight for extended periods.
Plan your hikes for early morning or late afternoon to avoid the peak sun hours. The sun is strongest between 10 a.m. and 4 p.m.
Be aware of reflective surfaces like snow and ice. These surfaces can significantly increase your UV exposure.
Even on cloudy days, UV radiation can penetrate the clouds. Don’t skip the sunscreen just because it’s overcast.
Post-hike skincare is just as important as pre-hike protection.
Rehydrate your skin with a moisturizer. Look for products containing hyaluronic acid or ceramides to help retain moisture.
Apply a soothing after-sun lotion to help calm any redness or irritation. Aloe vera is a classic choice.
Consider using a facial serum with antioxidants like vitamin C or vitamin E. These can help repair sun damage and protect against free radicals.
Pay attention to any changes in your skin, such as new moles or changes in existing moles. See a dermatologist for regular skin checks.
One common mistake is thinking that you’re protected by the altitude itself. While the thinner air might feel cooler, it doesn’t block UV radiation.
Another mistake is relying solely on sunscreen without using other forms of protection. Clothing, hats, and sunglasses are essential components of a comprehensive sun protection strategy.
Ignoring the cumulative effects of sun exposure is a long-term pitfall. Even if you don’t get a sunburn, repeated exposure to UV radiation can lead to premature aging and skin cancer.
Let’s consider a specific scenario: hiking to the summit of Mount Bierstadt, a popular 14er near Georgetown, Colorado.
The trail is mostly above treeline, meaning you’ll be exposed to intense sunlight for several hours.
Start early in the morning to avoid the peak sun hours. Apply sunscreen liberally before you start hiking, and reapply every two hours.
Wear a wide-brimmed hat, sunglasses, and long-sleeved clothing. Use a neck gaiter to protect your neck and face.
Bring plenty of water to stay hydrated. Dehydration can make your skin more vulnerable to sun damage.
After the hike, rehydrate your skin with a moisturizer and apply a soothing after-sun lotion.
Another example: a day of rock climbing at Red Rocks Amphitheatre.
The red sandstone reflects a significant amount of UV radiation. Apply sunscreen to all exposed skin, including your hands and forearms.
Wear climbing gloves to protect your hands from the sun and abrasion.
Use a belay device that provides shade for your hands.
Reapply sunscreen frequently, especially after washing your hands.
Remember, sun protection is not just a summer concern. UV radiation is present year-round, even in the winter.
Snow reflects up to 80% of UV radiation, making winter sports particularly risky.
Denver’s unique climate demands a proactive approach to sun protection. By understanding the risks and taking the necessary precautions, you can enjoy the outdoors safely and protect your skin for years to come. Don’t underestimate the Denver sun; it’s a powerful force to be reckoned with.