Denver's D: Dark Skin Hiding Altitude Burn?

By Franklin Everett Shaw

November 2, 2025

Don’t let the clear skies of Denver fool you. Many residents, especially those with darker skin, are unknowingly putting themselves at risk for serious sun damage. The misconception that melanin provides complete protection at high altitudes is dangerously wrong, and it’s time to set the record straight.

Denver’s mile-high elevation means you’re closer to the sun, and that translates to significantly higher UV radiation levels. Every thousand feet you ascend, UV radiation increases by approximately 4-5%. This means Denverites are exposed to roughly 20-25% more UV radiation than someone at sea level.

Melanin does offer some natural protection, acting like a built-in SPF. However, this natural SPF is often far lower than people realize, typically ranging from SPF 3 to SPF 15. This level of protection is simply insufficient in Denver’s intense UV environment, regardless of skin tone.

Consider this: a study published in the Journal of the American Academy of Dermatology found that while darker skin tones are less likely to burn visibly, they are still susceptible to UV damage, including DNA damage that can lead to skin cancer. This damage often goes unnoticed until it’s too late.

So, what can Denver residents with darker skin do to protect themselves? It starts with understanding the unique challenges of Denver’s UV environment and debunking common sunscreen myths.

First, let’s talk SPF. The Sun Protection Factor (SPF) measures how well a sunscreen protects against UVB rays, the primary cause of sunburn. In Denver, you need a higher SPF than you might elsewhere.

• SPF 30 is the bare minimum. Even on cloudy days, UV radiation can penetrate clouds, so daily application is crucial.
• Consider SPF 50 or higher for extended outdoor activities. Hiking in Red Rocks, biking along Cherry Creek, or even just walking around downtown exposes you to intense sunlight.
• Reapply every two hours, or more frequently if swimming or sweating. Don’t skimp on the reapplication.

Choosing the right sunscreen is also critical. Look for broad-spectrum sunscreens that protect against both UVA and UVB rays. Mineral sunscreens containing zinc oxide or titanium dioxide are excellent choices, as they are generally gentler on the skin and environmentally friendly.

A common mistake is not using enough sunscreen. Most people only apply 25-50% of the recommended amount, significantly reducing the SPF’s effectiveness. You should aim for about one ounce (a shot glass full) to cover your entire body.

Another pitfall is neglecting often-overlooked areas like the ears, neck, and tops of the feet. These areas are particularly vulnerable to sun damage.

Understanding Denver’s UV index is also essential. The UV index is a daily forecast of the intensity of UV radiation from the sun. You can find the UV index for Denver on weather apps, websites like the EPA’s SunWise program, or even local news broadcasts.

• When the UV index is 3 or higher, sun protection is essential. This is almost every day in Denver, especially during the summer months.
• Pay attention to the time of day. UV radiation is strongest between 10 a.m. and 4 p.m. Try to limit your sun exposure during these peak hours.

Let’s debunk some common myths about sunscreen and darker skin:

• Myth: Darker skin doesn’t need sunscreen. This is false. While melanin offers some protection, it’s not enough in Denver’s high-altitude environment. Everyone, regardless of skin tone, needs sunscreen.
• Myth: Sunscreen is only necessary on sunny days. Wrong again. UV radiation can penetrate clouds, so sunscreen is essential even on overcast days.
• Myth: All sunscreens are the same. Not true. Look for broad-spectrum sunscreens with an SPF of 30 or higher. Mineral sunscreens are often a good choice for sensitive skin.
• Myth: Sunscreen is only for the beach or pool. Sunscreen should be part of your daily routine, especially in Denver. Any time you’re outdoors, you’re exposed to UV radiation.

Consider the case of Maria, a Denver resident with dark skin who believed she didn’t need sunscreen. She enjoyed hiking in the foothills but never bothered with sun protection. Years later, she was diagnosed with skin cancer. Her story is a stark reminder that sun damage can affect anyone, regardless of skin tone.

Here’s a practical sun protection strategy for Denver residents:

1. Apply sunscreen daily. Make it part of your morning routine, just like brushing your teeth.
2. Choose the right sunscreen. Opt for a broad-spectrum mineral sunscreen with an SPF of 30 or higher.
3. Use enough sunscreen. Apply one ounce to cover your entire body.
4. Reapply every two hours. Set a timer on your phone to remind you.
5. Wear protective clothing. Hats, sunglasses, and long sleeves can provide additional protection.
6. Seek shade. Limit your sun exposure during peak hours.
7. Monitor the UV index. Adjust your sun protection strategy based on the daily forecast.

Beyond sunscreen, consider other protective measures. Wide-brimmed hats offer excellent protection for your face, ears, and neck. Sunglasses protect your eyes from harmful UV rays, reducing the risk of cataracts and other eye problems.

Living in Denver offers incredible opportunities for outdoor recreation, from hiking in the Rocky Mountains to exploring the city’s vibrant neighborhoods. But it’s crucial to be aware of the risks of sun exposure and take steps to protect yourself.

Don’t underestimate the power of the Denver sun. By understanding the unique challenges of Denver’s UV environment and adopting a comprehensive sun protection strategy, you can enjoy the outdoors safely and protect your skin for years to come. Remember, prevention is always better than cure.