Rosemary oil can boost hair growth by increasing certain enzyme activities and cytokine expression.
January 2010 in “Jounal of The Korean Society of cosmetology” Rosemary oil may promote hair growth by enhancing enzyme activities and IGF-1 expression.
January 2008 in “한국미용학회지” Certain enzymes and a growth factor were higher in mice treated with minoxidil or a peppermint and rosemary oil mix, which may be good indicators of hair growth.
January 2007 in “동의생리병리학회지 = Journal of physiology & pathology in Korean Medicine” Drynariae Rhizoma extracts, especially the acetone and EtoAc fractions, may help treat hair loss.
August 1994 in “Journal of dermatological science” Different substances affect hair and skin cell growth in various ways, with some promoting and others inhibiting cell proliferation.