Onion oil does indeed have a notable place in traditional remedies, and its use for hair issues is worth considering. The oil contains sulfur, which is known to support hair growth by promoting blood circulation to the scalp and potentially reducing inflammation that might lead to hair thinning. In our Siddha-Ayurvedic practice, the application of onion oil aligns with the principle of balancing doshas and nourishing the sapta dhatus, particularly the asthi (bone) and majja (bone marrow) dhatus, which are connected to hair health.
That said, onion oil should be used carefully. Start by doing a patch test to ensure you’re not allergic, as individual reactions can vary. When it comes to application, try massaging the oil into your scalp a couple of times a week. This could be done one hour before washing your hair, allowing the oil to penetrate the hair follicles without leaving your hair overly greasy or odorous. Yes, the smell can be quite strong, so consider a mild shampoo with herbal ingredients for rinsing.
If you find the odor too overwhelming, you might dilute the oil with a carrier oil, such as coconut or sesame oil, which can also enhance the overall benefit and help balance the excess vata dosha often associated with hair loss. Following this, ensure to maintain a balanced diet rich in nutrients that support hair health, like iron and protein, which align with enhancing the health of the dhatus.
Remember, while onion oil can support hair health, persistent or severe hair loss could be a sign of an underlying condition. Should this be the case, seeking a professional consultation is recommended to tailor a comprehensive treatment plan. They can provide insight based on your unique prakriti and any dosha imbalances to guide your path towards restoring hair vitality safely.



