A prescription estrogen hormone that is not approved for hair loss. Evidence that it regrows hair is weak, and it carries serious whole-body risks, including a US boxed warning.
a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor
Injections of mixed drugs, vitamins or other substances into the scalp. Evidence is limited, and infections and hair loss after injections have been reported.
A stronger DHT blocker than finasteride, approved for hair loss only in South Korea and Japan and off-label elsewhere, with the same class of side effects and a much longer washout.