Thyme, Rosemary, Lavender & Cedarwood for Alopecia Areata

A 1998 study found an extract of essential oils (thyme 88mg, rosemary 114mg, lavender 108mg, and cedarwood 94mg) in a mixture of carrier oils (jojoba 3ml and grapeseed 20ml) was significantly more effective than the carrier oils alone at improving hair regrowth in people with alopecia areata over 7 months. No significant adverse events were seen. These essential oils are thought to be anti-inflammatory. Rosemary may also be effective for androgenic alopecia.

Hay IC, Jamieson M, Ormerod AD. Randomized trial of aromatherapy. Successful treatment for alopecia areata. Arch Dermatol. 1998 Nov;134(11):1349-52. doi: 10.1001/archderm.134.11.1349. PMID: 9828867.

Panahi Y, Taghizadeh M, Marzony ET, Sahebkar A. Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial. Skinmed. 2015 Jan-Feb;13(1):15-21. PMID: 25842469.