Glossary
A lightweight carrier oil cold-pressed from hazelnuts (Corylus avellana) that is notable for its mild natural astringent properties. Hazelnut oil is rich in oleic acid but absorbs quickly and leaves a dry, matte finish, making it one of the few oleic acid-dominant oils suitable for oily and combination skin.
Hazelnut oil's unusual combination of oleic acid richness (75-80 percent) with a fast-absorbing, slightly astringent character sets it apart from other high-oleic oils like olive and avocado. The tannin content, while small, gives the oil a mild pore-tightening quality. This makes hazelnut oil useful for both moisturizing and controlling shine.
The oil is also rich in vitamin E and phytosterols, providing antioxidant and anti-inflammatory benefits. Its comedogenic rating of 1 makes it a safe choice for facial use across most skin types, though those with tree nut allergies should avoid it.
As a standalone facial oil, hazelnut oil excels for combination skin that needs moisture in dry areas and oil control in the T-zone. Its quick, dry absorption makes it suitable for daytime use under makeup.
In formulated products, hazelnut oil contributes a lightweight, silky texture and can balance heavier ingredients like shea butter and beeswax. It is an excellent blending oil that enhances the sensory properties of thicker formulations.
People with tree nut allergies should avoid hazelnut oil due to the potential for allergic reactions, including contact dermatitis. While cold-pressed oil has lower allergen levels than whole nuts, the risk is not zero. Consult an allergist before use.
The mild astringent tannins in hazelnut oil can temporarily tighten pores and reduce surface oiliness. Combined with its fast absorption, it provides a matte finish that controls shine for several hours. It is one of the best oils for managing oily skin.
Grapeseed is lighter and higher in linoleic acid (better for acne-prone skin). Hazelnut is higher in oleic acid but has astringent properties that control oiliness. For purely oily or acne-prone skin, grapeseed is preferred. For combination skin, hazelnut is often the better choice.
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