Onion Seed Oil

Product Description:

Onion Seed Oil is a cold pressed carrier oil extracted from the seeds of the onion plant (Allium cepa), a plant native to South and Southeast Asia that has been used in traditional practices for centuries. The oil is pale yellow to amber in colour with a strong, characteristic pungent and sulphurous scent and a medium consistency. Onion Seed Oil has become one of the most widely searched ingredients in the modern hair care market, valued for its naturally occurring sulphur content and its place in traditional formulation practices. At Maduras Herbals, we supply Onion Seed Oil as a raw material for cosmetic manufacturers, DIY formulators, and hair care brands looking for an authentic, traditional carrier oil from India.

Botanical and Local Names

Botanical Name: Allium cepa
English Name: Onion Seed Oil / Black Onion Seed Oil
Hindi Name: Pyaaz Beej Tel
Tamil Name: Vengayam Vidhai Ennai
Telugu Name: Ulli Ginja Nune
Malayalam Name: Ulli Kuru Enna
Kannada Name: Ulli Beeja Enne

About Onion Seed Oil

Onion seed oil is cold-pressed from the seeds of Allium cepa, the common onion, a plant with origins in Central Asia that has been cultivated across India for thousands of years. India is today one of the world's largest onion producers, with cultivation concentrated across Maharashtra, Karnataka, and Gujarat. While onion is universally known as a culinary staple, the oil from its seeds has attracted growing attention in cosmetic formulation, particularly for haircare applications where both traditional knowledge and emerging research point to meaningful benefits.

Onion seed oil contains a range of bioactive compounds including quercetin, a flavonoid with well-documented antioxidant and anti-inflammatory properties, alongside sulphur-containing compounds that are traditionally associated with hair strengthening and scalp health. It also has a reasonable linoleic and oleic acid content alongside its bioactive phytochemical profile. Research into onion juice and extract for hair regrowth has shown promising results in clinical settings, and while onion seed oil is a different preparation, its sulphur compound content is believed to contribute to similar scalp-stimulating benefits. It also has antimicrobial properties relevant to scalp conditions.

Working with Onion Seed Oil in Your Formulations

Onion seed oil is best suited to haircare formulations, particularly scalp oils, hair growth serums, anti-hair fall treatments, and scalp conditioning masks where its sulphur compound and quercetin content can be put to effective use. It blends well with black seed oil, castor oil, and bhringaraj oil for traditional hair strengthening preparations. Its characteristic scent is the primary formulation challenge, and fragrance masking or keeping usage rates at lower percentages are both worth considering in any leave-on application.

Quality & Formulation Notes

The onion-like scent is the main practical consideration when formulating with this oil, and it is worth communicating clearly on the product page so customers know what to expect. Batch variation in scent intensity is normal. Cold-pressed versions are preferable for retaining the quercetin and bioactive sulphur compound content. No adverse effects or formulation restrictions are widely documented beyond the scent management consideration.

Key Properties

• Cold pressed from onion seeds with no heat and no chemical solvents involved
• Medium consistency with a strong, characteristic pungent and sulphurous scent
• Naturally rich in sulphur compounds and essential fatty acids
• Unrefined and supplied in its natural state without bleaching or deodorisation
• Colour ranges from pale yellow to amber, typical of an unrefined cold pressed seed oil
• One of the most searched and widely formulated hair care carrier oils in the current market
• Often blended with lighter carrier oils to moderate its intensity and scent

Applications

Hair Care Formulations: Hair oils, scalp serums, pre-wash treatments, shampoo and conditioner oil-phase additions, hot oil treatments

Skin Care Formulations: Used in small percentages alongside lighter carrier oils in blended body and scalp formulations

Cosmetic Formulation: Carrier base for blended hair care formulations, traditional Ayurvedic hair preparations

General Use: Bulk supply for cosmetic manufacturers, DIY hair care kits, salon and spa product formulations

Packing and Storage

Store in a cool, dry place away from direct sunlight and heat. Keep the container tightly sealed when not in active use. Recommended storage temperature below 25°C. Refrigeration is acceptable for extended shelf life. Best before 18 months from packaging date. Natural variation in colour and scent between batches is characteristic of a cold pressed, unrefined oil.

Caution

Patch test is recommended before use on skin. In case of any allergic reaction or irritation, discontinue use and consult a dermatologist or physician.