Best For Skin Types
Dry, Combination, Mature
Addresses
Usage Frequency
Daily
What Is Hydrogenated Hazelnut Oil?
Hydrogenated hazelnut oil is hazelnut oil that has undergone hydrogenation—a chemical process in which hydrogen is added to the oil's molecular structure. This makes the oil more stable, gives it a thicker consistency, and extends its shelf life compared to raw hazelnut oil.
In skincare and haircare products, it functions as an emollient and conditioning agent. It helps soften the skin's outer layers and coat the hair shaft, reducing moisture loss and improving texture and smoothness.
How It Works
Hydrogenated hazelnut oil works as an occlusive emollient—it sits on the skin and hair surface, forming a protective layer that reduces water evaporation. This helps maintain hydration in the outer layers of skin and prevents moisture loss from the hair shaft.
Because it has been hydrogenated, it is more resistant to oxidation than unhydrogenated oils, making it more stable in formulations and less prone to degradation over time.
Clinical Evidence & References
Direct clinical research specifically on hydrogenated hazelnut oil in skincare is limited. However, hazelnut oil itself has been studied for skin conditioning properties, and hydrogenation is a well-established stabilisation technique used across the cosmetics industry.
The ingredient is included in formulations primarily for its established emollient properties. If you have specific skin concerns, it is best viewed as a supportive conditioning agent rather than a treatment ingredient.
How to Use
Hydrogenated hazelnut oil is typically used as one of several conditioning agents in a product formulation rather than as a standalone treatment. It is best suited to leave-on formulations such as creams, serums, and conditioners. If you are using a product containing this ingredient, follow the product instructions for application frequency. Those with oily skin or fungal acne concerns may wish to patch-test first, as oils can potentially exacerbate these conditions in some individuals.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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Hydrogenated Evening Primrose Oil
A stabilised plant oil rich in omega-6 fatty acids, used to condition and soften skin
Hydrogenated Farnesene
A lightweight synthetic emollient that conditions and softens skin
Hydrogenated Grapeseed Oil
A lightweight, stable oil that conditions skin without the shelf-life limitations of unrefined oils
Hydrogenated Hemp Seed Oil
A stable plant oil that conditions skin through fatty acids and natural antioxidants
Hydrogenated Jojoba Oil
A solid emollient derived from jojoba oil, used primarily for texture and conditioning
Hydrogenated Lanolin
A waxy emollient derived from lanolin that softens and conditions skin
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