It might sound surprising, but onion juice has been studied for its impact on hair health. The reason lies in its rich nutrient profile:
Sulfur compounds in onions are thought to support collagen production, which is important for hair strength
Antioxidants like flavonoids can help reduce oxidative stress on the scalp
Anti-microbial properties may support a cleaner, healthier scalp environment
A small 2002 study published in the Journal of Dermatology found that participants who applied onion juice to areas of hair loss saw more regrowth compared to those who used only tap water. While more research is needed, early results suggest onion oil may be a promising addition to your routine.
That said, it’s not a cure or guaranteed solution but it could be a gentle, affordable, and natural way to care for your scalp and strands.
What You’ll Need to Make Onion Hair Oil
Making your own onion hair oil at home takes just a few simple ingredients. You likely have most of them already in your kitchen.
Ingredients
- 1 large red or yellow onion
- 1/2 cup coconut oil (or use olive oil or castor oil as an alternative)
- Optional: 5–10 drops of essential oils like lavender or rosemary (for scent and added benefits)
Tools
- Grater or blender
- Cheesecloth or fine strainer
- Small saucepan
- Clean glass jar or bottle for storage
Step-by-Step: How to Make Onion Hair Oil
Step 1: Extract the Onion Juice
Peel and chop the onion into small pieces
Use a blender or grater to create a pulp
Strain the pulp using a cheesecloth or fine sieve to collect the juice
Step 2: Prepare the Oil Base
In a small saucepan, pour in the coconut oil
Heat the oil on low heat until it melts (do not let it boil)
Add the onion juice and stir gently. Let the mixture simmer on very low heat for about 5–10 minutes
Step 3: Cool and Store
Remove from heat and let it cool to room temperature
Optional: Add a few drops of essential oils for scent
Pour the mixture into a clean glass jar with a lid. Store in a cool, dry place
Tip: Onion oil has a strong natural scent. You can mask it with calming essential oils like lavender or peppermint, which may also support scalp circulation.
How to Use Onion Hair Oil Effectively
Consistency and patience are key when it comes to natural remedies. Here’s how to apply your onion hair oil for best results:
1. Pre-Wash Scalp Massage (2–3 times a week)
Warm a small amount of oil in your hands
Gently massage into your scalp using circular motions for 5–10 minutes
Leave on for at least 30 minutes (or overnight with a shower cap for deeper conditioning)
Wash your hair with a mild, sulfate-free shampoo
2. Hair Tips Application (Optional)
Rub a small amount of oil into the ends of your hair to prevent dryness and split ends
3. Patch Test First
Before full use, apply a little oil to your inner elbow or behind the ear. Wait 24 hours to check for irritation or allergy
Benefits of Onion Hair Oil (Backed by Nature)
While individual results may vary, users commonly report the following benefits over time:
- Stronger hair strands due to sulfur and antioxidants
- Reduced hair shedding
- Improved scalp health from its antimicrobial properties
- Shinier, softer texture when used consistently with conditioner
Keep in mind that lifestyle factors like nutrition, sleep, and stress also play a role in hair health. Onion oil can complement, but not replace, a balanced approach.
Natural Alternatives to Pair With Onion Oil
If you want to boost your hair care routine even further, consider these gentle, science-backed additions:
- Aloe vera gel – Soothes the scalp and adds moisture
- Rosemary oil – May stimulate hair follicles (according to a 2015 study comparing it to minoxidil)
- Biotin-rich foods – Eggs, sweet potatoes, and nuts support healthy hair from the inside
Final Thoughts
Making your own onion hair oil is a simple and cost-effective way to nurture your scalp and hair. While it may not be an overnight solution, consistent use combined with healthy habits can support fuller, healthier-looking hair over time.
Want to give it a try? Start with one batch and use it 2–3 times a week for a month — then assess how your hair feels and looks.
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Disclaimer
This article is for informational purposes only and does not substitute professional medical advice. Consult your doctor before making health changes or starting a new treatment.