Ultraviolet radiation from the sun can cause sunburn and contribute to skin ageing, so improved sunscreen options are an important public-health topic. Bemotrizinol is a chemical sunscreen filter that absorbs UVA rays, which are linked to deeper skin ageing, and also blocks UVB rays, which cause sunburn. The ingredient has been widely used in Europe and Asia.
The Food and Drug Administration has approved bemotrizinol for use in the United States. Approval allows the ingredient to be evaluated and used within the US regulatory framework, but it does not by itself put products on store shelves. Manufacturers must redesign and test formulations, and they must decide on labeling and marketing.
Michael Kwa, an assistant professor of dermatology at Boston University Chobanian & Avedisian School of Medicine, co-wrote a 2022 paper documenting the gap between ingredient availability in Europe and the United States. Kwa said the FDA decision bolsters public safety by bringing broader UVA and UVB protection into the regulatory system.
How quickly sunscreens with bemotrizinol reach consumers will depend on product reformulation, testing, labeling and industry decisions. Further developments will follow regulatory steps and responses from companies and health professionals.
Difficult words
- ultraviolet — electromagnetic rays beyond visible violet light
- ageing — gradual process of skin becoming older
- absorb — take in energy or another substanceabsorbs
- formulation — specific mixture of ingredients in a productformulations
- regulatory — relating to government rules and official controls
- approval — official permission to sell or use something
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- What practical steps could slow the appearance of sunscreens with bemotrizinol on US store shelves?
- Why is it important for a sunscreen ingredient to protect against both UVA and UVB rays?
- How might doctors, companies and regulators work together to bring new sunscreen ingredients to consumers safely?
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