In recent years, skepticism towards sunscreen has gained traction, particularly concerning chemical sunscreens and their health risks. Claims have been made about the dangers of chemicals being absorbed into the bloodstream, potentially causing cancer and other health issues.

There are primarily two types of sunscreens: chemical and mineral. Chemical sunscreens contain UV filters that absorb UV rays, whereas mineral sunscreens create a physical barrier that deflects them.

Studies have shown that certain chemical filters are absorbed into the blood. Notably, octocrylene can degrade into benzophenone, a possible carcinogen. Environmental concerns have also been raised about these chemicals' impact on marine life.

"We have a tendency in our society to say that it's such a small amount and therefore it's not harmful, but the chronic buildup of these chemicals could have a cumulative effect," noted a dermatologist.

While sunlight is vital for vitamin D, minimal sun exposure suffices for adequate intake. Studies suggest sunscreen does not dramatically hinder vitamin D absorption since people generally apply less sunscreen than recommended.

Although some chemical filters pose potential risks, mineral sunscreens provide an alternative that avoids these concerns. However, the availability of newer, potentially safer sunscreen ingredients is limited in the U.S. due to stringent regulations.

At present, no definitive causal link between chemical sunscreens and cancer in humans exists. The overarching recommendation from experts is consistent: use a broad-spectrum sunscreen with at least SPF 30 to safeguard against harmful UV exposure.