Mineral and Chemical Sunscreens: Understanding the Label

Editorial update: October 8, 2026.

When comparing sunscreens, start with the finished product’s label. The active ingredients, SPF, broad-spectrum designation and directions tell you more than a simple mineral-versus-chemical preference.

What the label tells you

Broad-spectrum sunscreen helps protect against UVA and UVB radiation. SPF describes the level of sunburn protection measured in testing; it is not a promise of extra hours in the sun. A higher SPF does not remove the need to reapply.

Read the active ingredient list rather than assuming how many mineral or other filters a formula contains. Moisturizing ingredients serve a different purpose from labeled sunscreen actives.

Use sunscreen as directed

Apply sunscreen before sun exposure as directed on its Drug Facts label. Reapply at least every two hours, and follow the specific instructions for swimming, sweating and towel drying. Water-resistant products state a tested duration on the label; no sunscreen is waterproof.

Combine sunscreen with shade and clothing that covers exposed skin. Choose a product you can use as directed and ask a healthcare professional about individual sensitivity or other concerns.

For details, read the FDA’s guide to sunscreen and sun protection.