Corylus Avellana (Hazel) Seed Oil

What is Corylus Avellana (Hazel) Seed Oil?

Corylus avellana seed oil comes from the kernels of the hazelnut tree, a deciduous plant in the Betulaceae family native to Europe and Asia. This pale yellow, mildly nutty oil is typically extracted by cold-pressing the seeds to preserve its natural lipids. Chemically, it consists mainly of triglycerides rich in oleic acid (around 70%), linoleic acid, and smaller amounts of saturated fatty acids like palmitic acid, along with tocopherols for stability. In cosmetics, it serves as an emollient in lotions, serums, and oils, where it spreads easily to form a soft, breathable film on the skin's surface. This helps reduce moisture loss while allowing skin to breathe. It also contributes to product scent profiles and neutralizes off-odors, enhancing the overall sensory appeal without heaviness.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Delivers lightweight moisture to soften and smooth skin texture.

Forms a gentle barrier to support skin's natural hydration balance.

Adds a subtle natural scent while masking less pleasant notes in formulas.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People with oily or acne-prone skin seeking non-pore-clogging hydration.
Anyone with a known hazelnut or tree nut allergy.
Individuals with dry or rough skin needing gentle softening.
People sensitive to nut-derived scents in fragranced products.
Those preferring lightweight oils in daily moisturizers or serums.
Those preferring completely fragrance-free formulations.

Safety Notes

  • Rated among the lowest concern levels by safety assessors for cosmetic use.
  • Rarely causes irritation or sensitization in patch tests from reviews.

Frequently Asked Questions about Corylus Avellana (Hazel) Seed Oil

What is hazelnut seed oil used for in skincare?

It acts as an emollient to soften skin, supports hydration, and helps with fragrance and odor masking in products.

Is hazelnut seed oil non-comedogenic?

Yes, it carries a comedogenic rating of 0, ideal for avoiding pore blockages.

Who should be cautious with this ingredient?

Those with hazelnut allergies should avoid it due to potential reactions.