Rosemary oil may possibly be effective for hair loss when combined with other essential oils because it stimulates new hair growth, as noted by the University of Maryland Medical Center. However, more studies are necessary before its use can be recommended for alopecia, as of 2015.Continue Reading
The herb rosemary has a long history of medicinal use for the treatment of indigestion, memory problems, muscle spasms, menstrual flow issues and other conditions. However, there are not many research studies on rosemary oil's efficacy for hair loss and these other conditions.
There was one limited and small study on rosemary oil for alopecia areata, a condition where the hair falls out in clumps. The study involved 84 subjects using a combination of rosemary, cedarwood, thyme and lavender essential oils daily for a period of 7 months. In that time period, the test subjects experienced the regrowth of hair. Although the exact way rosemary oil reverses hair loss is not entirely known, rubbing the oil on the scalp may irritate it, which may stimulate hair regrowth through increased blood circulation, as stated by WebMD.
Rosemary oil should only be used as a topical agent. It is not meant for oral use, states WebMD. Taking excessive amounts of undiluted rosemary oil orally is not safe and can lead to side effects, such as vomiting and irritated kidneys.Learn more about Conditions & Diseases