Onion oil is a cold-pressed carrier oil made from Allium cepa (the common onion), valued in hair and skin routines because it is rich in fatty acids, antioxidants and vitamins yet feels surprisingly light on the skin. Azlok's Onion Oil is cold-pressed to keep its natural compounds intact, and it pours as a pale yellow to yellow liquid with a characteristic onion-like aroma. You use it as a scalp and hair treatment or blend it into skincare formulations — not for eating.
What onion oil is used for
Most people reach for onion oil because of what it can do in a haircare routine. The fatty acids and antioxidants in it are commonly used to condition the scalp and coat the hair strands. It also finds a place in skincare because the oil is lightweight and absorbs without leaving a heavy, greasy film.
- Scalp and hair oiling: massaged into the scalp before washing to nourish and condition.
- Hair masks and serums: blended with other carrier oils or into DIY hair formulations.
- Skincare blends: used in small amounts within lotions, balms and facial oil mixes for its emollient feel.
- Soap and cosmetic making: as a nutrient-rich oil in handcrafted formulations.
Because it is naturally light in consistency, it tends to suit dry, sensitive and combination skin when properly diluted, and it rinses out of hair more easily than heavier oils.
How to use onion oil
Onion oil is a carrier oil, so it can be applied to the scalp and hair on its own or blended. A few practical ways to use it:
- Warm oil scalp massage: take a little oil, warm it slightly, and massage into the scalp for a few minutes. Leave it on for 30–60 minutes (or overnight if your scalp tolerates it), then shampoo out.
- Blend with lighter oils: mix with coconut, sesame or jojoba oil if you find the aroma strong or want a milder treatment.
- As a skincare ingredient: add a small percentage to a facial oil blend or body butter rather than applying neat to the face.
- With essential oils: a few drops of lavender or rosemary essential oil can help mask the natural onion odour in a hair blend.
Tips and safety notes
Onion oil is for external use only. Please do not ingest it. A few sensible precautions go a long way:
- Patch test first: apply a small amount to your inner forearm and wait 24 hours before wider use, especially if you have sensitive skin.
- Dilute for facial use: use it as part of a blend rather than neat on delicate facial skin.
- Mind the aroma: the odour is characteristic and lingers; wash thoroughly and consider adding a fragrant essential oil to your blend.
- Keep away from children and store out of direct sunlight.
- If you have a scalp condition or known allergies, check with a doctor before starting.
Buying and storage
Azlok sells Onion Oil starting at ₹249, with pack sizes from 50 Gm up to 20 KG, so it works for a single home user as well as small businesses making hair oils, soaps or cosmetics in bulk. Key specifications include a specific gravity of about 1.085 gm/ml, a refractive index near 1.483, and a flash point of 105°F. It is insoluble in water and manufactured in India.
To get the most out of it:
- Store in a cool, dark place, tightly capped, away from heat and sunlight.
- Keep the bottle closed between uses to limit air exposure.
- Use within the roughly two-year shelf life and check the oil's smell and appearance before each use.
- For bulk quantities, decant smaller working amounts so the main container stays sealed.
FAQ
Is onion oil the same as onion seed oil?
In this listing the oil is described as cold-pressed onion oil from Allium cepa bulbs. Terms like "onion oil" and "onion seed oil" are sometimes used loosely in the market, so always check the botanical name and the part used, which here is the bulb.
Can I apply onion oil directly to my scalp?
Yes, many people apply it to the scalp before washing. Do a patch test first, and if you find the aroma or strength too much, blend it with a lighter carrier oil like coconut or jojoba.
Does onion oil have a strong smell?
It has a characteristic onion-like odour. Washing your hair thoroughly afterwards and adding a few drops of a pleasant essential oil to your blend helps keep the smell in check.
Can onion oil be eaten or used in cooking?
No. This is a cosmetic-grade carrier oil meant for external use in hair and skin routines. Do not ingest it.
How long does onion oil last?
The stated shelf life is about two years when stored properly — cool, dark, and tightly sealed. Discard it if the colour, texture or smell changes noticeably.