5 common mistakes that cancel out the effectiveness of sunscreen

Applying sunscreen is one of the most essential steps in protecting your skin from sun damage, including premature aging, dark spots, and skin cancer. Yet, despite good intentions, many people make mistakes that significantly reduce the effectiveness of their sun protection. Here are five common errors to avoid to ensure optimal defense against UV rays.

The first mistake is not applying enough product. For sunscreen to be effective, quantity matters. Dermatologists recommend about one teaspoon for the face and roughly a shot glass (about 30 ml) for the entire body. Applying too little leaves parts of the skin exposed and more prone to sunburn.

The second mistake is forgetting certain areas of the body. Ears, neck, eyelids, feet, and even the scalp are often neglected, although they are just as vulnerable to sun damage. Complete protection means covering all exposed surfaces evenly.

The third mistake is not reapplying sunscreen during the day. Even water-resistant formulas lose their power over time, especially after swimming, sweating, or towel-drying. It’s recommended to reapply every two hours to maintain consistent protection.

The fourth mistake is using expired sunscreen. Sunscreen products have a limited shelf life, usually printed on the packaging. Once the UV filters degrade, the product loses its protective properties. Always check the expiration date before applying.

Finally, the fifth mistake is assuming that a high SPF (50 or more) allows for prolonged sun exposure. A high SPF does not mean complete or long-lasting protection. It’s still important to follow safe sun practices, such as avoiding peak UV hours, wearing protective clothing, and seeking shade whenever possible.

By avoiding these mistakes, you can enjoy the sun safely while preserving the health and beauty of your skin.