Onion Juice for Hair Growth in 6 Weeks? Doctor: Study Only for Alopecia Areata, Don't Try Randomly

The internet is circulating claims that 'applying onion juice can treat baldness.' A dermatologist stated that while this claim has a research background, it originated from a small 2002 trial in Iraq targeting alopecia areata, not all types of hair loss. The study, published by a team at Baghdad Teaching Hospital, included 38 patients with alopecia areata, averaging 22.7 years old. The experimental group of 23 people applied fresh raw onion juice twice daily, while the control group of 15 applied tap water. Results showed that 86.9% of the experimental group grew new hair by week 6; only 2 people (13%) in the control group regenerated hair by week 8. This study had a small sample size, and the results should not be over-generalized. However, the medical community views this with caution. Dr. Wu Wei-Hsin from National Taiwan University Hospital pointed out that this is the only paper so far, lacking subsequent repeated validation, making its credibility low. Furthermore, the study subjects had alopecia areata, an autoimmune disease, which differs in cause from common androgenetic alopecia (hereditary hair loss). Onion juice is not a standard therapy and is ineffective for male pattern baldness. Dr. Chien Ming-Cheng warned that alopecia areata itself has a tendency to self-heal, with 50% of patients recovering within a year and 80% within two years, which could interfere with judging treatment efficacy. Additionally, onion juice is irritating and may cause contact dermatitis, such as redness and itching. Dermatologist Dr. Ko Fu-Huan also reminded that 'natural' does not mean 'safe,' and one should be cautious before trying folk remedies. Delaying proper treatment could be more detrimental than beneficial. Conclusion: The data on onion juice treating alopecia areata is real, but the evidence is weak and its applicability is narrow, making it not recommended as a routine therapy. Hair loss has diverse causes; one should first consult a dermatologist to confirm the type and then undergo evidence-based treatment. Internet folk remedies, before trying, do your research first 😑