A new proposal from the US Food and Drug Administration (FDA) could expand the list of sunscreen ingredients permitted in the United States. The ingredient at the center of the discussion is bemotrizinol, a filter that is already commonly used in parts of Europe, Australia, and Asia.
If the proposal moves forward, Americans could eventually see sunscreens on store shelves that include this additional option for broad-spectrum protection — meaning coverage against both UVA and UVB rays.
What is bemotrizinol and why does it matter?
Bemotrizinol is a chemical UV filter designed to help protect skin from two major types of ultraviolet radiation:
- UVA rays, which contribute to skin aging and can play a role in skin cancer risk.
- UVB rays, which are more closely linked to sunburn and also increase skin cancer risk.
In its announcement, the FDA described bemotrizinol as having low levels of absorption through the skin and said it rarely causes skin irritation. For many people — especially older adults with more sensitive or thinning skin — tolerability and comfort can make a big difference in how consistently sunscreen is used.
Why isn’t it already available in US sunscreens?
In the United States, sunscreens are regulated as over-the-counter (OTC) drugs. That means active ingredients must meet specific FDA standards before they can be marketed broadly. A key part of this process is the FDA’s framework for deciding whether ingredients are generally recognized as safe and effective (GRASE) for their intended use.
Adding a new UV filter to the US market isn’t just a matter of popularity in other countries — it requires a structured review of safety and effectiveness based on the FDA’s requirements.
Who requested the change?
According to the FDA, a company called DSM Nutritional Products LLC submitted a request asking the agency to add bemotrizinol to the list of active ingredients allowed in US sunscreens.
The FDA has opened the proposal for public comment and plans to evaluate the ingredient under the GRASE review process before deciding whether to issue a final order.
Why this matters for skin cancer prevention
Most skin cancers are linked to too much ultraviolet (UV) exposure over time. UV rays come from the sun, but also from sources like tanning beds and sun lamps. Protection isn’t just about beach vacations — everyday exposure adds up, especially for people who spend time outdoors walking, gardening, traveling, or driving.
Dermatologists and public health experts generally emphasize a layered approach:
- Seek shade when UV levels are high
- Wear UV-protective clothing, hats, and sunglasses
- Use broad-spectrum sunscreen consistently
Even if new ingredients become available, the most important protection is the one you’ll actually use regularly — and apply correctly.
Chemical vs. mineral sunscreen: what’s the difference?
Most sunscreens fall into two broad categories, based on the active ingredients inside.
Chemical sunscreens
Chemical filters work by interacting with UV radiation at the skin’s surface and helping convert it into heat that dissipates. Examples of chemical filters currently used in the US include ingredients such as avobenzone, octocrylene, and others.
Mineral sunscreens
Mineral (also called physical) sunscreens use ingredients like zinc oxide and titanium dioxide. These sit on top of the skin and help form a protective barrier that reduces UV penetration.
Both types can be effective. The best choice often comes down to skin sensitivity, how a product feels, cosmetic preference, and whether it fits into your daily routine.
Practical sunscreen tips for older adults
- Look for “broad spectrum” on the label to cover UVA and UVB.
- Use enough: most adults need roughly a shot-glass amount for full-body coverage.
- Reapply every 2 hours when outdoors, and after sweating or swimming.
- Don’t forget easy-to-miss areas: ears, neck, tops of feet, hands, and scalp (if hair is thinning).
- Pair sunscreen with shade and clothing for stronger overall protection.
Health note: This article is for general information and doesn’t replace medical advice. If you have a history of skin cancer or notice new or changing spots on your skin, speak with a dermatologist promptly.
