Think You're Protected From the Sun? Houston Methodist Dermatologists Say These Common Sunscreen Mistakes Could Raise Your Skin Cancer Risk
With another scorching Texas summer underway, many people are reaching for sunscreen before heading outside. But according to Houston Methodist dermatologists, simply using sunscreen isn't always enough. The way it's applied—and how often it's reapplied—can make a significant difference in protecting against skin damage and reducing the risk of skin cancer, the most common cancer in the United States.
The reminder comes as ultraviolet (UV) levels remain high across Southeast Texas, where residents often spend time outdoors at parks, sporting events, pools, neighborhood gatherings and even during routine activities like walking the dog or commuting. While sunscreen has become a daily staple for many, dermatologists say common misconceptions continue to leave people exposed to harmful UV rays that can damage the skin over time.
According to the Centers for Disease Control and Prevention (CDC), most skin cancers are caused by overexposure to ultraviolet radiation from the sun or artificial sources like tanning beds. The CDC also emphasizes that anyone can develop skin cancer, regardless of skin tone, and that UV damage can occur even on cloudy days because UV rays still penetrate cloud cover.
Dermatologists Say Small Mistakes Can Have Long-Term Consequences
Dr. Sonal Parikh, a dermatologist and Mohs skin cancer surgeon with Houston Methodist, says many patients believe they're adequately protecting themselves when, in reality, they are unknowingly leaving vulnerable areas exposed.
"People often think they're doing enough to protect their skin, but we see the consequences of missed spots, improper application and inconsistent use every day. As someone who diagnoses and treats thousands of skin cancers yearly, I can tell you these small mistakes can add up over time."
Among the most common sunscreen mistakes Houston Methodist dermatologists see are:
- Not reapplying sunscreen every two hours.
- Missing frequently overlooked areas such as the scalp, ears, neck, hands and feet.
- Assuming makeup containing SPF provides sufficient protection.
- Skipping sunscreen on cloudy days.
Parikh also says one persistent myth continues to put many people at risk.
"A lot of people think if they tan, they're in the clear – but that's not true. Skin cancer can happen in any skin type. I've treated patients from all backgrounds, and skin cancer does not discriminate."
Makeup With SPF Isn't a Substitute
Many cosmetic products now advertise SPF protection, but Parikh says they shouldn't replace sunscreen.
"The amount of makeup you'd need to actually reach the SPF on the label isn't realistic for everyday use. It's best to start with a moisturizer that contains sunscreen, then layer makeup on top."
Even brief periods outdoors can add up throughout the day.
"We've all stepped outside thinking it'll just be a few minutes, and then it turns into much longer. That's why I recommend wearing sunscreen daily on areas like your face, neck and hands."
Why Daily Sun Protection Matters
While a painful sunburn may be the most obvious sign of too much sun exposure, UV radiation can also cause cumulative damage that increases the risk of skin cancer over a lifetime. According to the CDC, ultraviolet rays damage skin cells, and repeated exposure can contribute to basal cell carcinoma, squamous cell carcinoma and melanoma, the deadliest form of skin cancer. The agency also notes that unprotected skin can begin experiencing UV damage in as little as 15 minutes under certain conditions.
The American Cancer Society estimates that more than 5 million basal and squamous cell skin cancers are diagnosed each year in the United States, and those numbers have continued to rise over time.
For Texans, daily protection is especially important. High UV indexes, extended outdoor seasons and everyday exposure—from youth sports and yard work to driving with sunlight streaming through the windows—can all contribute to cumulative UV damage.
Houston Methodist's Sun Safety Recommendations
Houston Methodist dermatologists recommend making sun protection part of an everyday routine, not just something reserved for beach trips or afternoons at the pool.
To reduce the risk of sun damage, they recommend:
- Using a broad-spectrum sunscreen with SPF 30 or higher.
- Applying sunscreen about 20 minutes before going outdoors.
- Using approximately one fluid ounce to cover the body.
- Reapplying every two hours, or more frequently after swimming or excessive sweating.
- Wearing wide-brimmed hats and UV-blocking sunglasses.
- Seeking shade whenever possible, especially during peak afternoon sunlight.
The CDC likewise recommends combining sunscreen with protective clothing and shade rather than relying on sunscreen alone, noting that sun protection is important throughout the year—even on cool or cloudy days.
As summer continues across the Houston area and beyond, dermatologists hope these reminders encourage residents to build simple daily habits that can help protect their skin for years to come.
Stay tuned to My Neighborhood News for more local health updates and community news that matters to you.
Tiffany Krenek has been on the My Neighborhood News team since August 2021. She is passionate about curating and sharing content that enriches the lives of our readers in a personal, meaningful way. A loving mother and wife, Tiffany and her family live in the West Houston/Cypress region.
