Natural hair growth

• In 2014 Toxicology Research published an animal study which compared the topical application of 4 substances on mice to determine their effectiveness in stimulating hair growth. The substances included saline, jojoba oil, minoxidil (Rogaine) and peppermint oil. After 4 weeks, peppermint oil showed the most prominent hair growth effects with increased dermal thickness, follicle number and follicle depth. [Source]