A maximal usage trial (MUsT) conducted by FDA researchers demonstrates that sunscreen active ingredients can penetrate skin to reach the bloodstream at higher levels than previously believed.
FDA MUsT Shows Sunscreen Ingredient Absorption ‘Not Just A Theoretical Concern’
In FDA’s maximal usage trial published May 6 in JAMA, oxybenzone, octocrylene, avobenzone and ecamsule all absorbed into subjects’ bloodstreams at levels that raise systemic safety questions. The active ingredients are among 12 that FDA identified in a February proposed rule as currently lacking data to support continued GRASE status.
