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Sunscreen Myths Debunked: The Truth About Protecting Your Skin

Sunscreen is a crucial element of skincare, yet misconceptions about its use are widespread. These myths can significantly impact how effectively we protect our skin from the sun’s harmful rays. At Academic Alliance in Dermatology, we are committed to empowering our patients with accurate information, enabling them to make informed decisions about their skin health. Let’s debunk some common sunscreen myths and shed light on the truths that will help keep your skin safe and healthy.


Myth 1: “You Only Need to Apply Sunscreen Once a Day”

Sunscreen’s protective abilities diminish over time, especially after sweating, swimming, or towel drying. The American Academy of Dermatology recommends reapplying sunscreen every two hours and even more frequently if you’re in water or sweating heavily.

Myth 2: “Darker Skin Tones Don’t Need to Apply Sunscreen”

While melanin does provide some natural protection against sunburn and skin cancer, no skin type is immune to the harmful effects of UV radiation. People with darker skin tones can still suffer from photoaging, hyperpigmentation and skin cancer. Therefore, sunscreen is essential for everyone, regardless of skin color.

Myth 3: “My Makeup Has SPF, So I Don’t Need a Separate Sunscreen”

While makeup with SPF does offer some level of protection, it’s usually not enough to fully protect your skin from UV rays. Most people don’t apply makeup thickly or evenly enough to achieve the SPF level stated on the product. For adequate protection, use a broad-spectrum sunscreen under your makeup.

Myth 4: “You Don’t Need to Apply Sunscreen When It’s Cloudy or in Winter”

Up to 80% of UV rays can penetrate clouds, meaning your skin is at risk even on overcast days. Similarly, snow and ice can reflect up to 80% of UV rays, increasing your exposure during winter months. Sunscreen is a year-round necessity, regardless of the weather or season.

Myth 5: “Moisturizers with SPF Don’t Provide Enough Sun Protection”

Moisturizers with SPF can provide adequate protection if they have an SPF of 30 or higher and are applied generously and evenly. However, like with makeup, people often apply moisturizer more sparingly, which may reduce its effectiveness as a sun protectant. Consider using a separate sunscreen to ensure you’re getting enough coverage.

Myth 6: “Waterproof Sunscreen Doesn’t Need to Be Reapplied”

The term “waterproof” can be misleading when it comes to sunscreen. The FDA has actually mandated that sunscreens should be labeled as “water-resistant” rather than “waterproof” to more accurately reflect their capabilities. Water-resistant sunscreens are formulated to maintain their SPF protection for a certain period of time while swimming or sweating, typically for 40 or 80 minutes. However, they do lose effectiveness after this time or after towel drying and should be reapplied to maintain protection.

Myth 7: “A High SPF Means I Don’t Need to Reapply as Often”

While a higher SPF sunscreen does provide a greater degree of protection against UVB rays, it doesn’t grant you a pass to apply it less frequently. SPF, or Sun Protection Factor, is a measure of how well a sunscreen can protect skin from UVB rays, which are the main cause of sunburn and contribute to skin cancer.

Regardless of the SPF, all sunscreens begin to lose effectiveness after two hours due to factors like sweating, swimming, and even just the absorption by the skin. Therefore, reapplying sunscreen every two hours is essential for continuous protection, even if you’re using a product with a very high SPF.

Embrace Sun Protection Year-round

Debunking these myths underscores the importance of consistent and correct sunscreen application as part of your daily routine. Remember, protecting your skin from the sun is crucial for preventing skin cancer and premature aging. For personalized advice on selecting and using sunscreen, consult with the experts at Academic Alliance in Dermatology. 

Click here to contact us, and let’s commit to better skin health together by making sunscreen a non-negotiable part of our daily lives.

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