Dr Harth explains that the other main ingredients of rosemary oil — α-Pinene, 1,8-cineole, camphor, and borneol — may all be beneficial for hair growth too, and points to "a 2017 study that ...

1,8-cineole, a compound found in the essential oil of rosemary has previously been shown to act on the biochemical systems that underpin memory. It also is found in other plants (eg eucalyptus ...