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If you’re struggling with hair thinning, breakage, or a dull scalp, nature may hold the answer right in your kitchen. Onion oil (1), when prepared correctly, can dramatically improve scalp health and stimulate hair growth, without chemicals or commercial fillers.
In this guide, you’ll learn how to make your onion oil for hair growth using just a few ingredients and simple steps.
Why Onion Oil Deserves a Spot in Your Hair Routine
- Stimulates growth: Sulfur in onions boosts collagen production, essential for hair regeneration.
- Strengthens strands: Onion oil reduces breakage by nourishing the follicles.
- Soothes the scalp: It combats itchiness, dandruff, and scalp infections.
- Boosts shine: Coconut oil adds a protective layer and moisture.
The Science Behind Onion and Coconut Oil
Onions are rich in sulfur (2), a key building block of keratin, the protein hair is made of. According to a 2002 Journal of Dermatology study, applying onion juice significantly improved hair regrowth in people with alopecia areata (3).
Coconut oil (4) contains lauric acid, which penetrates the hair shaft better than other oils. It protects against protein loss, making the hair stronger and healthier. Together, these ingredients create a potent hair treatment.
What’s Inside That Makes It Work?
- Sulfur (Onion): Strengthens hair and improves thickness.
- Antioxidants (Onion): Combat free radicals that cause premature greying.
- Lauric acid (Coconut oil): Repairs damaged hair and prevents protein loss.
- Vitamin E (Optional oils): Enhances shine and supports scalp health.
Discontinue If You Notice…
- Persistent burning or itching on the scalp.
- Excessive hair fall after multiple uses.
- Strong odor that doesn’t fade after rinsing.
Always patch test before first use to avoid potential reactions.
Make It Your Own: Adjust the Recipe as Needed
- Stronger formula? Use more onions or let it simmer longer.
- Lighter version? Add more coconut oil or a few drops of sweet almond oil.
- Milder scent? Add 4–5 drops of lavender, rosemary, or peppermint essential oil.
Who Should Use Onion Oil?
- Best for: Normal, dry, or thinning hair.
- Avoid if: You have a sensitive scalp, open wounds, or an onion allergy.
Is Onion Oil Safe?
Yes, for most people.
It’s a natural remedy with minimal side effects, especially when made at home without additives. Still, perform a patch test to rule out allergic reactions.
2 Best DIY Onion Oil Recipes for Hair Growth
1. Classic Onion-Infused Coconut Oil
This time-tested DIY is perfect for deep nourishment and stimulating hair growth through natural infusion. It involves heat to release the full potential of the ingredients.
Ingredients:
- 1–2 medium onions (peeled and chopped)
- 1 tablespoon coconut oil (for blending)
- ½ cup coconut oil (for infusion)
- 3–4 drops of essential oil (lavender, rosemary, or tea tree – optional)
Directions:
- Chop the onions and blend them with 1 tablespoon of coconut oil to form a smooth paste. This ensures the nutrients are ready for infusion.
- In a small saucepan, combine the paste with ½ cup of coconut oil.
- Sauté the mixture over low heat, stirring continuously. Allow it to cook until the paste turns golden brown—this step is crucial to release sulfur and antioxidants from the onions into the oil.
- Let the mixture cool down completely.
- Strain the oil through a clean cotton cloth or fine mesh strainer to remove solids.
- Add a few drops of essential oil to reduce the strong onion scent and enhance scalp benefits.
- Store in an airtight glass container away from direct sunlight.
How to Use: Massage a few tablespoons of the oil into your scalp and along the hair length. Leave it on for 30–45 minutes before washing with a mild, sulfate-free shampoo.
Pro Tip: Use 2–3 times a week. Regular usage helps reduce breakage and encourages stronger, thicker growth.
2. Quick Onion Oil with Raw Juice (No-Heat Method)
A simpler, time-saving option for those who want benefits without heating. Great for sensitive scalps.
Ingredients:
- 2 tablespoons freshly extracted onion juice
- 4 tablespoons coconut oil
- 3 drops rosemary essential oil (optional, for fragrance and added scalp stimulation)
Directions:
- Grate or blend the onion and strain the pulp to extract 2 tablespoons of fresh juice.
- In a bowl, mix the juice with 4 tablespoons of coconut oil.
- Add a few drops of rosemary essential oil to mask the onion smell and boost circulation.
- Let the mixture sit for 20–30 minutes to allow partial blending.
- Use immediately, or refrigerate in a glass jar and use within 2 days to maintain freshness.
How to Use: Apply the oil blend to your scalp using fingertips. Massage in circular motions to boost blood flow. Leave it on for 30 minutes, then rinse thoroughly.
Pro Tip: Since this version lacks preservatives, use only small batches and store in the fridge. Works best for oily to normal scalp types.
Final Thoughts: Grow with Nature
Making onion oil at home is easy, cost-effective, and free from harmful chemicals. With regular use, you can restore hair strength and volume naturally. Trust the process, be consistent, and your hair will thank you.
Frequently Asked Questions (FAQ’S)
1. How often should I use onion oil?
A. Use 2–3 times a week for best results. Avoid daily use to prevent buildup.
2. Can I leave onion oil overnight?
A. Yes, but only if your scalp tolerates it. Start with 30 minutes and increase gradually.
3. Will the smell linger in my hair?
A. The smell may remain slightly, but using essential oils or a mild herbal shampoo can help eliminate it.
