Rosemary oil has a long history in folk medicine as a scalp treatment believed to support hair thickness and growth. Research suggests that rosemary essential oil, when diluted in a carrier oil and massaged into the scalp, may help promote blood circulation to hair follicles, potentially creating a more favorable environment for hair health. One notable clinical study found that rosemary oil performed comparably to minoxidil over a six-month period in individuals experiencing androgenetic alopecia, with participants reporting less scalp itching as a side effect. Studies also indicate that certain compounds in rosemary, such as carnosic acid, may help protect cells from oxidative stress, which can play a role in hair thinning. As with many folk remedies, the evidence is promising but still evolving, and individual experiences may vary.
Compare this supplementThese are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Oil | 400 mg | Daily | Hair growth, androgenetic alopecia | Based on RCT by Panahi et al. (2015) comparing rosemary oil to minoxidil 2% for hair regrowth over 6 months |
| Oil | — | Daily | Topical formulation for hair health; used at 1–2% dilution in carrier oil | Standard dilution rate referenced in dermatology and aromatherapy clinical research |
| Topical | 2–3 mL | Daily | Scalp application for hair loss and circulation | Common in clinical trials using diluted rosemary oil applied directly to scalp |