When it comes to unique beauty practices, one trend that has been making waves is using onion water to achieve luscious locks. While it’s important to respect traditional hair care methods, onion water has caught the attention of many individuals seeking to enhance their hair health. This blog will explore the fascinating world of onion water and its impact on your precious hair.

The Buzz and Claims Surrounding Onion Water for Healthy Hair

The revelation of onion water as a secret to healthy hair has sparked numerous discussions, leaving people intrigued by the claims made by those who swear by this DIY treatment. The allure of shiny, vibrant hair after just a few washes, as demonstrated by captivating before-and-after pictures circulating on social media, has captivated the curiosity of many.

Historical and Cultural Significance of Onion Water for Hair

Renowned trichologist expert William Gaunitz, the founder of Advanced Trichology in Phoenix, Arizona, reveals that his patients struggling with hair loss have been discussing the benefits of this natural treatment for quite some time. The historical significance of onion water can be traced back to ancient Ayurvedic traditions and the rich cultural heritage of the Dominican Republic.

Unveiling the potential of onion water for lustrous hair

Scientific Perspective: Properties of Onions and Potential Benefits for Hair

From a scientific standpoint, onions possess unique properties that cannot be overlooked when considering their potential benefits for hair. Packed with antioxidants, flavonoids, and antimicrobial agents, as explained by respected trichologist Kerry Yates, founder of Colour Collective in Dallas, onions show promise in combating fungal infections that contribute to dandruff. While further research is needed to fully understand its effectiveness for scalp health, a 2020 review in the Journal of Pharmacy and Bioallied Sciences acknowledged the antifungal and antimicrobial potential of onion extract and essential oils.

Research Findings: Onion Water and Hair Regrowth

Although research on the real-world application of onion water is limited, preliminary studies have shown a positive correlation between onion water and hair regrowth in individuals with alopecia areata, a condition characterized by hair loss. A small-scale study involving 38 participants yielded promising results, with 87 percent of those using onion juice reporting noticeable regrowth after six weeks, compared to only two participants from the tap water group. However, more extensive studies are required to determine the full extent of this potential effect.

The Role of Sulfur in Onion Water for Inflammatory Hair Loss

One distinguishing factor of onion water is its high sulfur content, which is also found in foods such as meat, eggs, garlic, and cruciferous vegetables. Sulfur is commonly used as an over-the-counter treatment for inflammatory skin conditions when applied to the scalp. Its efficacy lies in addressing issues of inflammatory hair loss, providing relief for many individuals.

Limitations of Onion Water for Different Types of Hair Loss

It is important to note that onion water may not be effective for all types of hair loss, particularly those caused by nutrient deficiencies or androgenetic alopecia. There is currently no evidence to suggest that onion juice can suppress dihydrotestosterone levels, which contribute to androgenetic alopecia. Similarly, onion water has not been proven to enhance protein or vitamin D levels at the hair follicle’s base, which are crucial for addressing nutritional hair loss. In such cases, seeking advice from certified dermatologists or trichologists is the recommended course of action.

Potential Side Effects and Precautions When Using Onion Water

Before considering onion water for your hair, it is important to be aware of potential side effects. Individuals with onion allergies should avoid topical application altogether. Even if you do not have an allergy, it is crucial to thoroughly rinse the onion water from your scalp to prevent any potential irritation. While the lingering onion scent is not a health-related concern, it is understandable that you may prefer to eliminate it. The good news is that when combined with shampoo, the onion smell should dissipate after rinsing, leaving your hair fresh.

DIY Preparation and Application of Onion Water

If you are intrigued and want to give the onion water remedy a try, Gaunitz advises against cooking or boiling onions, as the raw onion itself holds the desired medicinal properties. To prepare the solution, simply peel and finely chop three to four onions and extract the juice by either squeezing or blending them. Apply the juice to your scalp using a cotton pad, and for those concerned about the onion scent, adding a little lemon juice can help counteract it. Massage the mixture into your scalp and allow it to sit for an hour before rinsing. Follow up with a second cleanse using your regular shampoo.

Alternatives to DIY Onion Water: Topical Products with Onion Extract

If preparing a DIY onion water solution seems overwhelming, there are alternative options available in the form of topical hair care products that contain onion juice. Shampoos, conditioners, or oils infused with onion extract are viable alternatives worth considering.

Expert Perspectives: Cautions and Considerations for Onion Water

While some experts endorse the use of onion water, not all fully embrace this trend. Hair loss surgeon William Yates, based in Chicago, advises against solely relying on social media trends or celebrity endorsements. Genetic factors, along with potential hair loss due to diseases or hormonal imbalances, play significant roles in hair density. Prioritizing a balanced diet rich in protein, vitamins, and minerals while eliminating processed foods is crucial for overall hair health. Additionally, it is advisable to avoid harsh chemicals such as phthalates, sulfates, and alcohol in your hair care routine.

Taking a Holistic Approach to Hair Health: Genetics, Nutrition, and Chemical-Free Care

In conclusion, the utilization of onion water for promoting scalp health and enhancing hair appearance is not a new concept. It has deep roots in ancient practices and cultural traditions. While some individuals attest to its potential benefits, scientific research on its widespread efficacy for hair and scalp issues remains limited. As with any hair care regimen, consulting with dermatologists or trichologists is prudent before attempting DIY treatments, as not all hair concerns may benefit from onion water. Taking a holistic approach to hair health by considering genetics, nutrition, and chemical-free care is essential for maintaining healthy and lustrous locks.


  1. Source: “Inflammation in the Pathogenesis of Hair Loss: A Review” by Waqas R. Ahmed, Ruijun Han, and Rui Li Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8339303/
  2. Source: “Inflammatory processes in alopecia areata” by M. Tanemura, K. Yamazaki, M. Nomura, K. Kato, and T. Sugaya Link: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1346-8138.2002.tb00277.x
  3. Source: “Inflammation in Androgenetic Alopecia” by Mary L. Stevenson, Min Kyung Park, and Lorraine A. Fitzpatrick Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5460521/