Sweet let us know how it works. I also found this study, main ingredient in endoamp.
Specific stimulation of steroid 5 alpha-reductase solubilized from rat liver microsomes by endogenous phosphatidylserine. - PubMed - NCBI
Among these endogenous phospholipids, only phosphatidylserine stimulated the 5 alpha-reductase, suggesting that the lipid requirement is specific for phosphatidylserine in steroid 5 alpha-reductase from liver microsomes.