Sharing information is easier than ever, but that also means myths about sun protection can spread quickly. Knowing what is true and what is misleading can help you make informed decisions about keeping your skin safe from UV damage.
Below, we explain six common sun protection misconceptions and what the evidence actually shows.
1. Not Applying Enough Sunscreen or Not Reapplying It
Key misconception: One application is enough.
Health organizations, including the Skin Cancer Foundation, recommend daily use of a broad spectrum sunscreen to help reduce UV damage.
If your whole body is exposed, adults typically need about seven teaspoons of sunscreen to achieve the labeled SPF. Sunscreen also wears off, so reapplication every two hours is important. This is especially true after swimming, sweating, or towel drying.
2. Solely Relying on Sunscreen for Sun Protection
Key misconception: Sunscreen alone is sufficient.
Sunscreen is only one part of sun protection. Combining sunscreen with other strategies helps reduce overall exposure. Clothing, shade, hats, and UV protective sunglasses all play important roles. For a fuller overview of sun safe habits, see our Sun Protection Tips page.
3. Believing Normal Clothing Offers the Same Protection as UPF 50+ Clothing
Key misconception: Any clothing blocks UV rays equally.
Many regular clothing items provide limited UV filtering. A lightweight cotton T-shirt may have a UPF rating around 5, meaning a significant amount of UV radiation can reach the skin.
UPF 50+ clothing offers much more consistent protection. These fabrics are designed and tested to block most UVA and UVB rays. Sun protective garments and accessories can be especially useful for extended outdoor activities. For more on this topic, see our article on UV Protective Clothing.
4. Only Being Cautious on Hot Days
Key misconception: Cooler or cloudy weather means low UV risk.
UV levels do not depend on temperature, and up to 90 percent of UV rays can pass through clouds. You can still experience sun damage on overcast, windy, or cool days. Sun protection is recommended year round, regardless of the weather.
Environment Canada provides the daily UV Index, which helps you gauge how strong UV radiation is where you are.
5. Avoiding Sun Protection to Get More Vitamin D
Key misconception: More sun means more vitamin D.
Only a brief amount of sun exposure is needed for most people to maintain vitamin D levels. Excess UV exposure increases the risk of skin damage without increasing vitamin D benefit. Dietary sources and supplements can also contribute to vitamin D intake when needed. The Government of Canada provides general information here.
6. Believing Tanning Does Not Cause Skin Damage
Key misconception: A tan is a sign of health.
A tan is actually a sign that the skin has been injured by UV radiation. Over time, repeated exposure can contribute to skin discolouration, premature wrinkles, and an increased risk of certain skin cancers. Tanning is not a protective measure and should not be used as one.
Putting It All Together
Understanding common misconceptions can help you choose better sun protection habits. Sunscreen is important, but protective clothing, wide brimmed hats, sunglasses, and seeking shade are also key parts of staying safe outdoors.
If you would like to learn more about sun protective clothing, visit our post on UV Protective Clothing.
