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Jane (Mass, US) on 06/04/2014
5 out of 5 stars

In 2002 The Journal of Dermatology had a study on the use of Onion Juice for hair growth in Alopecia Subjects. 80% of subjects grew hair within a week of using onion juice as a treatment. The allicin in the onion actually stimulates the hair follicle and pulls the blood supply up to the follicle roots encouraging growth. You just take basic dutch onions and put them in a blender, puree to a juice, can take out the pulp if you wish. Massage mixture into the scalp before bed, put a shower cap over it at night while you sleep. In the morning rinse off. This remedy also works for male pattern baldness. You can google this study. Also use till you have the desired length of hair and then use once a week for maintenance. 
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Replied By Rob (Kentucky) on 02/13/2024

Onion juice (Allium cepa L.), a new topical treatment for alopecia areata

https://pubmed.ncbi.nlm.nih.gov/12126069/

Abstract

Alopecia areata is a patchy, non-scarring hair loss condition. Any hair-bearing surface may be involved, and different modalities of treatment have been used to induce hair regrowth. This study was designed to test the effectiveness of topical crude onion juice in the treatment of patchy alopecia areata in comparison with tap water. The patients were divided into two groups. The first group [onion juice treated] consisted of 23 patients, 16 males (69.5%) and 7 females (30.5%). Their ages ranged between 5-42 years with a mean of 22.7 years. The second group [control; tap-water-treated] consisted of 15 patients, 8 males (53.3%) and 7 females (46.6%). Their ages ranged between 3-35 years with a mean of 18.3 years. The two groups were advised to apply the treatment twice daily for two months. Re-growth of terminal coarse hairs started after two weeks of treatment with crude onion juice. At four weeks, hair re-growth was seen in 17 patients (73.9%), and, at six weeks, the hair re-growth was observed in 20 patients (86.9%) and was significantly higher among males (93.7%) compared to females (71.4%) P<0.0001. In the tap-water treated-control group, hair re-growth was apparent in only 2 patients (13%) at 8 weeks of treatment with no sex difference. The present study showed that the use of crude onion juice gave significantly higher results with regard to hair re-growth than did tap water (P<0.0001), and that it can be an effective topical therapy for patchy alopecia areata.

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Replied By judith (USA) on 02/14/2024

I know several women affected by alopecia. Is crude onion juice defined as juicing a plain yellow or white onion? does it matter what type? many thanks and blessings to you, judith

Replied By Reader (Summerville) on 02/16/2024

A hot onion, rather than a sweet onion, as the sulfur is probably the important component. But any type likely works.
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