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5AR inhibitors will always cause the AR to up regulate, but I don't think hyper androgenicity is a real thing, or if it is, it's very rare. Up regulation of the AR can last for a while though. To answer your question, yes, estrogen should help to down regulate androgen receptor density.Just wondering, are there people here who had reflex androgenicity from finastreide found success when using estrogen either topical/orally?