After 27 years without a new filter, bemotrizinol sunscreen has arrived in America. Ultra Violette's Unblock Screen SPF 50 launched August 31, 2026, three months after FDA clearance. Here is what BEMT actually does, how it compares with avobenzone, who it suits, and which products come next.

Which is best? The debate around the toxicity of sunscreen is complex and often misunderstood. It stems from a mix of scientific studies, regulatory caution, misleading headlines, and growing concerns about both human health and environmental impacts. Here’s a clear breakdown of the main concerns and where the debate stands: 🔬 1. Chemical Absorption and Potential Hormone Disruption Toxicity of chemicals in suncreams Concern: Some ingredients in chemical sunscreens—like oxybenzone, avobenzone, octinoxate, and homosalate—can be absorbed into the bloodstream through the skin. Debate: Studies (including by the FDA) found that these ingredients can be absorbed at levels higher than previously thought.