"Our patients with thinning hair have less of a hair barrier and are more prone to this," an expert told Newsweek.

The longer a hair follicle stays in the anagen phase, the longer it will grow (3 2). Other studies suggest spermidine may promote human hair growth (33). But, the research on spermidine and hair ...

Department of Chemistry, State University of New York, Potsdam, New York 13676, United States ...