Neem oil: its composition, benefits, and precautions for use

Neem oil is extracted from the seeds of the neem tree (Azadirachta indica), a sacred tree in India often called the "pharmacy tree." Native to India and Myanmar, it thrives in tropical and subtropical regions such as India, Pakistan, Bangladesh, and Sri Lanka. For over 2,000 years, Ayurvedic medicine has valued its leaves, bark, and oil for their therapeutic virtues: soothing the skin, purifying the body, repelling parasites, and strengthening health.

Today, neem is cultivated in many warm areas (Africa, Latin America, Indian Ocean), but its cradle remains South Asia. In this article, we invite you to delve into the composition and benefits of this exceptional vegetable oil.

How is neem oil obtained or extracted?

Neem oil is extracted from the mature seeds contained in the fruits of the Azadirachta indica (neem) tree. The seeds are then sun-dried to prevent fermentation and preserve the active ingredients.

Neem oil is primarily obtained through two methods: cold pressing and solvent extraction.

1. Cold extraction (the most common for raw oil)

• The dry seeds are crushed and then put through a screw press (preferably cold press).
• This yields a thick, brownish-green oil with a strong, characteristic odor.
• This oil is then filtered to remove impurities.

2. Solvent extraction (less used in cosmetics)

• Solvents like hexane can be used to extract more oil.
• However, this process is mostly reserved for the agricultural industry (natural pesticides), as it results in an oil of lower cosmetic quality.

Virgin, cold-pressed neem oil is the most sought-after for cosmetic uses. It retains its active ingredients (fatty acids, azadirachtin, vitamin E) better.

So, what does neem oil contain?

The composition of neem oil is very rich given the numerous active principles it possesses. It is renowned for its antibacterial, antifungal, and anti-inflammatory properties. This makes it a first-choice oil for treating problematic skin and dry hair.

Essential fatty acids (oleic, myristic, stearic, palmitic, linoleic): intensely nourish, soften the epidermis, form a protective film on the skin barrier, strengthen the hair, and protect the scalp.

Amino acids: the building blocks of proteins, essential for hair vitality and the proper functioning of the body.

Vitamin E: a major antioxidant, it preserves the skin's radiance and reduces hair dryness.

Azadirachtin and nimbine (limonoid): compounds with antiparasitic, antifungal, and antibacterial properties.

Phytosterols: these are plant compounds that resemble cholesterol but are adapted to the plant world. They strengthen the skin barrier, improve the elasticity of the hair fiber, and soothe irritation and inflammation.

What are the benefits of neem oil?

Neem oil has several effects on the skin and hair; it is both purifying and sanitizing thanks to its active compounds (azadirachtin, nimbine...), helping to fight against bacteria, fungi, and skin parasites. It is also soothing, calming irritation, and regenerating due to the fatty acids and vitamin E, which nourish deeply and promote the repair of damaged skin.

Ideal for acne-prone or blemish-prone skin

Neem oil possesses powerful antibacterial and antifungal properties. It slows the proliferation of microorganisms and thus helps to alleviate certain dermatoses such as acne. Thanks to its richness in limonoids and phytosterols, it also acts as a natural anti-inflammatory, soothing irritated pores. Finally, its regenerating and healing virtues promote tissue repair, cell reconstruction, and better skin healing.

Suitable for atopic skin suffering from eczema or psoriasis

Neem oil is traditionally used as a natural ally against eczema. Thanks to its richness in soothing and protective active ingredients, it eases itching and hydrates dry patches. Rich in essential fatty acids, it strengthens the skin barrier, prevents dryness, and promotes healing. Neem oil contains limonoids and phytosterols that calm redness, itching, and inflammation linked to eczema flare-ups.

Neem oil does not "cure" eczema, but it can be an effective natural complementary treatment to soothe, protect, and support the skin on a daily basis.

Neem oil fights against skin and scalp parasites

Neem oil is renowned as a natural remedy against lice, used for a long time in India and Ayurvedic medicine. It acts as follows:

Azadirachtin: this active compound blocks the growth and reproduction of lice, reducing their life cycle.

Insect repellent action: its strong odor and antiparasitic properties naturally repel lice.

Antibacterial and soothing: it calms scalp itching often caused by nits and lice bites.

What are the contraindications of neem oil?

Neem oil is very powerful; even though it is natural, it can present certain risks and requires precautions for use.

Ingestion forbidden: neem oil is toxic if taken orally, especially for children (neurological and hepatic risks).

Pregnant and breastfeeding women: its use is not recommended, as certain compounds (azadirachtin, nimbine) may have hormonal or abortifacient effects.

Babies and young children: avoid direct application, unless in products specifically formulated and dermatologically tested.

People with allergies or sensitive skin: risk of irritation or allergic reaction, especially when used pure.

Liver diseases: proceed with caution, as the oil contains substances that can put strain on the liver.

So, what are the precautions for using neem oil?

Mandatory dilution: applied pure, it can cause irritation or skin reactions. Always mix it with a gentle vegetable oil (5–20%).

Patch test: perform a skin test (in the crook of the elbow) before initial use, as some sensitive skin types may react.

Strong odor: its pungent scent can cause discomfort or headaches in some people → use in small quantities.

Storage: keep away from heat and light, as it turns rancid quickly.

Neem oil is a powerful natural concentrate that must be used with caution, always diluted and never ingested.

Conclusion

Extracted from the seeds of the neem tree, neem oil is rich in essential fatty acids, vitamin E, limonoids, and phytosterols. It is recognized for its purifying, antibacterial, and antifungal virtues, ideal for blemish-prone skin and scalps prone to dandruff. Its anti-inflammatory, soothing, and restorative properties also make it a precious treatment to calm irritation, promote healing, and strengthen the skin barrier. Always used diluted, it protects, nourishes, and regenerates the skin and hair, while offering a natural repellent action against parasites. To take daily care of the dry and sensitive skin of babies, children, and adults, also discover our Sacred Date Oil.

FAQ about neem oil