Sunscreen is often the first thing people reach for when summer starts, but not all sunscreens offer the same level of protection. Between outdoor gatherings, pool days, and vacation travel, it’s easy to think a quick application will do the job. However, many people end up surprised by unexpected sunburns, uneven coverage, or signs of skin aging despite using sunscreen daily. If you’re wondering whether your sunscreen is truly protecting your skin, it may be time to take a closer look—and maybe even check in with a dermatologist.

Understanding What Really Protects You

When choosing a sunscreen, the number on the label—SPF—often gets the most attention. But SPF only tells part of the story. SPF, or Sun Protection Factor, measures protection against UVB rays, which are responsible for sunburn. What it doesn’t measure is how well the sunscreen protects against UVA rays, which go deeper into the skin and play a major role in aging and skin cancer.

To get the best defense, your sunscreen should be labeled “broad-spectrum,” which means it protects against both UVA and UVB rays. Water resistance is another key factor—especially if you’re swimming or sweating—though no sunscreen is fully waterproof. For everyday wear, especially on the face, a lightweight mineral sunscreen with zinc oxide or titanium dioxide can offer solid protection without irritating sensitive skin.

How and When You Apply Matters

Even the best sunscreen won’t help much if it’s not applied properly. Most adults don’t use enough—about one ounce (a shot glass full) is needed to cover the entire body. Reapplying every two hours, or after swimming or sweating, is also essential. It’s easy to forget spots like the ears, scalp, tops of feet, or back of the neck, which are common areas for missed burns.

It’s also smart to pair sunscreen with other protective habits like wearing a wide-brimmed hat, sunglasses, and seeking shade during peak sun hours. These steps don’t replace sunscreen but help reduce long-term damage and lower your risk of skin cancer.

When to See a Dermatologist

If you’ve been diligent with sunscreen but still notice sun damage, dark spots, or changes in your skin, it’s worth scheduling a skin check. A dermatologist can assess whether your current sun protection routine is working for your skin type and recommend products that are better suited to your lifestyle. They can also spot signs of damage early and offer treatments that help restore the skin’s health and appearance.

Your skin faces the sun every day—make sure you’re giving it the protection it truly needs. If you have questions about sunscreen or concerns about your skin, a visit to a dermatologist can help you make the most of your summer while keeping your skin safe for years to come.