Journal of the American Academy of Dermatology · 2015 · rct · n=40
Randomized controlled trial (n=40, 26 weeks): PIVOTAL replication study: identical UV filters with and without iron oxide tinting; median MASI increase from baseline to month 6 higher for non tinted 2.43 vs tinted 0.45 p=0.027; first RCT specifically for relapse prevention.



















