Rowan & Thistle

PLATE No. 022

Ingredient Collection

Cucumber Seed Oil

Cucumis sativus

Botanical plate of Cucumber (Cucumis sativus): a climbing vine with broad toothed leaves, curling tendrils, yellow flowers and dark green fruit, beside an open flower, a young fruit, a mature cucumber, a fruit cut lengthwise, pale seeds and a golden drop of oil.

Figure Key

  • Fig. 1 Mature fruiting vine
  • Fig. 2 Open flower
  • Fig. 3 Immature fruit
  • Fig. 4 Mature fruit
  • Fig. 5 Longitudinal fruit section
  • Fig. 6 Seeds
  • Fig. 7 Cold-pressed seed oil

The Ingredient

Cucumber seed oil doesn't come from the watery flesh we usually associate with cucumbers. It comes from the small seeds tucked inside the mature fruit. Those seeds contain a light oil naturally rich in linoleic acid, a fatty acid that helps support the skin's protective barrier and reduce moisture loss. The result is a lightweight, silky oil that conditions and softens without leaving skin feeling especially heavy or greasy.

From Plant to Ingredient

  1. Cucumber Seed Oil, step 1 — Mature Cucumber: a whole dark green cucumber with a curled stalk.

    1. Mature Cucumber

    As the cucumber matures, seeds develop throughout the center of the fruit.

  2. Cucumber Seed Oil, step 2 — Inside the Cucumber: a cucumber cut lengthwise showing pale flesh and rows of developing seeds.

    2. Inside the Cucumber

    Cutting the fruit lengthwise reveals the developing seeds surrounded by the familiar cucumber flesh.

  3. Cucumber Seed Oil, step 3 — Cucumber Seeds: four flat, pale tan cucumber seeds.

    3. Cucumber Seeds

    The mature seeds are separated and dried before their oil is obtained.

  4. Cucumber Seed Oil, step 4 — Cucumber Seed Oil: a single golden-amber drop of oil.

    4. Cucumber Seed Oil

    The dried seeds are cold pressed to release their light, golden botanical oil.

Why We Chose It

Cucumber seed oil gives us conditioning without a heavy, oily finish. Its high linoleic acid content makes it particularly useful when we want to support softness and the skin barrier while keeping the finished feel light. It also provides gentle conditioning for hair and scalp without relying on a richer, heavier oil.

What You'll Notice

  • Lightweight Softness — Helps skin feel soft and conditioned without a heavy finish.
  • Moisture Support — Helps reduce moisture loss and support comfortable-feeling skin.
  • Silky Conditioning — Adds smoothness with a light, dry-feeling finish.

Botanical Profile

Scientific Name
Cucumis sativus
INCI Name
Cucumis Sativus Seed Oil
Plant Part Used
Seed
Final Ingredient
Oil
Origin
Poland

A Closer Look

Despite its name, cucumber seed oil isn't the same thing as cucumber juice, extract, or cucumber water. The fresh fruit is mostly water, while the oil is stored inside its seeds. Once those seeds mature and are dried, they can be pressed to release an oil with a completely different composition and feel from the crisp, watery cucumber we know as food.

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