Efficacy of Cosmerna ARI in Improving Androgenetic Alopecia in Europeans: A Double-Blind, Randomized, Placebo-Controlled Clinical Trial Over 6 Months December 2025 in “ Clinical & Experimental Dermatology and Therapies ” We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on gavinpublishers.com →