8 Common Sunscreen Mistakes and How to Avoid Them

Sunscreen is a crucial part of any skincare routine, protecting the skin from harmful ultraviolet (UV) rays that can lead to premature aging, sunburn, and skin cancer. However, many people make common mistakes when using sunscreen, rendering it less effective. As a dermatologist, I’ve seen firsthand the consequences of improper sunscreen use and am here to help you avoid these pitfalls. Below are eight common sunscreen mistakes and how you can avoid them to ensure you get the maximum protection for your skin.

1. Not Applying Enough Sunscreen

Mistake: Many people apply less sunscreen than needed, which significantly reduces its effectiveness.

Solution: The American Academy of Dermatology recommends using at least one ounce (about a shot glass full) to cover all exposed skin. For the face alone, use a nickel-sized amount. Ensure you spread it evenly and thoroughly over all exposed areas, including often-missed spots like the ears, neck, and the tops of your feet.

Reference: www.aad.org/public/everyday-care/sun-protection/sunscreen/how-to-apply

2. Skipping Sunscreen on Cloudy Days

Mistake: Assuming that cloudy or cool days don’t require sunscreen.

Solution: UV rays can penetrate clouds, and you can still get sunburned on overcast days. Always apply sunscreen, regardless of the weather, to protect your skin from UV radiation. UV rays can also reflect off surfaces like water, sand, and snow, increasing your risk of exposure even when it’s not sunny.

Reference: www.skincancer.org/skin-cancer-prevention/sun-protection/sunscreen/

3. Not Reapplying Sunscreen

Mistake: Applying sunscreen once in the morning and assuming you’re protected all day.

Solution: Sunscreen needs to be reapplied every two hours, or immediately after swimming or sweating, to maintain its effectiveness. If you're using a water-resistant sunscreen, follow the instructions on the label regarding how often to reapply.

Reference: www.cancer.org/healthy/be-safe-in-sun/protect-skin-with-sunscreen.html

4. Using an Inadequate SPF

Mistake: Choosing a sunscreen with too low of a Sun Protection Factor (SPF).

Solution: Dermatologists recommend using a broad-spectrum sunscreen with an SPF of at least 30. SPF 30 blocks about 97% of UVB rays, while higher SPFs block slightly more. However, no sunscreen can block 100% of UVB rays, so reapplication and other protective measures are still necessary.

Reference: www.fda.gov/drugs/safe-use-sun-protection/how-sunscreens-work

5. Relying Solely on Sunscreen for Sun Protection

Mistake: Believing that sunscreen alone is enough to protect you from the sun’s harmful rays.

Solution: Sunscreen should be part of a comprehensive sun protection strategy. Wear protective clothing, wide-brimmed hats, and sunglasses. Seek shade during peak sun hours (10 a.m. to 4 p.m.) and avoid tanning beds, which also emit harmful UV rays.

Reference: www.cdc.gov/cancer/skin/basic_info/sun-safety.htm

6. Ignoring Expiration Dates

Mistake: Using sunscreen that has expired.

Solution: Check the expiration date on your sunscreen. Expired sunscreen can lose its effectiveness, leaving you unprotected. Most sunscreens have a shelf life of about three years, but if you notice any changes in texture, color, or smell, it's best to replace it even if it hasn't expired.

Reference: www.aad.org/public/everyday-care/sun-protection/sunscreen/sunscreen-expiration

7. Overlooking Sensitive Areas

Mistake: Forgetting to apply sunscreen to sensitive areas like the lips, scalp, and around the eyes.

Solution: Use a lip balm with SPF for your lips, wear a wide-brimmed hat or use a spray sunscreen for your scalp, and apply sunscreen carefully around the eyes. Sunglasses with UV protection can also help protect the delicate skin around your eyes.

Reference: www.skincancer.org/skin-cancer-prevention/sun-protection/protecting-sensitive-areas/

8. Assuming All Sunscreens are the Same

Mistake: Believing that any sunscreen will provide adequate protection.

Solution: Not all sunscreens are created equal. Look for broad-spectrum sunscreens that protect against both UVA and UVB rays. Choose a sunscreen that suits your skin type; for example, if you have sensitive skin, look for sunscreens with physical blockers like zinc oxide or titanium dioxide, which are less likely to cause irritation.

Reference: www.mayoclinic.org/healthy-lifestyle/adult-health/in-depth/sunscreen/art-20045110

Conclusion

By avoiding these common sunscreen mistakes, you can better protect your skin from harmful UV rays and reduce your risk of skin damage and skin cancer. Remember, proper application and reapplication of sunscreen, combined with other sun protection measures, are key to maintaining healthy skin.