(experimental) An emerging method (still many years away)

(doubtful) Sold since 1959, with no published proof of permanence

(doubtful) Electrified patches sold since the 1990s with no published proof it can work.

(doubtful) Sold since 1971 with no published proof of claims.

(doubtful) Microwaves fired from skin's surface at follicles. Sold since the 1990s with no published proof it is safe and effective.

(doubtful) Over-the-counter products taken orally which claim to affect hair growth.

(doubtful) Over-the-counter products put on the skin which claim to affect hair growth.