1. How long does onion oil take to show results?

Most people notice reduced hair fall in 3–4 weeks, with visible regrowth in 8–12 weeks of consistent use.

2. Can onion oil cause irritation?

Yes, it may irritate sensitive scalps. Always do a patch test and dilute with a carrier oil.

3. Can I leave onion oil overnight?

Yes—if your scalp tolerates it. Those with sensitive or oily scalps should leave it for only 45–60 minutes.

4. Should I mix onion oil with other oils?

Mixing with coconut, castor, olive or neem oil enhances benefits and reduces irritation.

5. Does onion oil help with dandruff?

Yes. Its antifungal properties help control dandruff, especially when combined with fenugreek or neem.

6. Can I use onion hair oil daily?

Daily use isn’t recommended. Stick to 2–3 times per week.

7. Is onion juice for hair as effective as onion oil?

Onion juice works well but may be harsher on the scalp. Onion oil is gentler and easier to apply.

Onion Hair Oil: Benefits for Hair Growth & Damage Repair

Sanya Anand

26 DEC ‘25

Keep reading to know...

01 What Is Onion Hair Oil?
02 Benefits of Onion Hair Oil
03 DIY Onion Hair Oil Recipes
04 How to Apply Onion Hair Oil Correctly
05 Best Time to Apply – Morning vs Night
06 Additional Tips for Healthy Hair
07 Conclusion
08 FAQs

If you've been exploring natural hair treatments, chances are onion hair oil has popped up on your radar. This once-traditional remedy is now a favourite in modern haircare routines thanks to its sulphur-rich composition, antioxidant profile, and scalp-revitalising properties. People are turning to onion oil because it strengthens roots, reduces hair fall, boosts scalp circulation, and supports natural regrowth—making it a potent option for anyone wondering "is onion good for hair?" or "does onion oil help in hair growth?" The answer, as you'll see, is a resounding yes.