Name: Macadamia Nut oil - Virgin
Brand: Alchemme
Price: 9.75 AUD
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Macadamia integrifolia is an Australian tree with holly-like leaves. The fruit is borne in a case enclosing an extremely hard spherical nut.

In cosmetics, refined macadamia nut oil contributes to the overall emollient and conditioning properties of formulations. Its high content of palmitoleic acid, a fatty acid also found in the sebum of human skin, makes it particularly beneficial for maintaining skin suppleness and providing a protective barrier against moisture loss.

Macadamia oil contains vitamin E, an antioxidant that helps neutralise free radicals and supports skin health. Its gentle and non-comedogenic nature makes refined macadamia nut oil suitable for a wide range of skin types, including sensitive and dry skin, making it a popular choice for those seeking natural and nourishing ingredients.

Macadamia Oil is a fantastic replenishing oil for skin's moisture barrier. It is high in mono-unsaturated fatty acids, contains palmitoleic acid (promotes younger looking skin), as well as omega 3 and omega 6 fatty acids. It has been reputed to soothe, cool and revitalise the look of the skin and is considered very safe to use in facial and baby care products.

In general, nuts, seeds, and legumes are excellent sources of phytosterols, both for the body and for skin. Phytosterols can help replenish and restore ageing skin, keeping it pliant and supple.

Macadamia oil is insoluble in water and alchohol, but soluble in other oils. It should be added to the formula as is, in the fat phase of the formulation, and can be used at 1-100%, as it can be used neat in massage oils.

INCI Name: Macadamia Integrifolia Seed Oil

Botanical Name: Macadamia integrifolia

Extraction Method: Cold-pressed

Part Used: Nuts (kernels)

Origin: Primarily grown in Australia, South Africa, and Kenya.

Appearance: Clear, pale yellow liquid

Odour: Mild, nutty scent

Texture: Light, non-greasy, and easily absorbed by the skin

Viscosity: Medium to low

Shelf Life: Typically 12–24 months (store in a cool, dark place)

Oleic Acid (C18:1): 55% – 67% (monounsaturated fat, highly moisturizing)

Palmitoleic Acid (C16:1): 16% – 23% (supports skin regeneration and moisture retention)

Linoleic Acid (C18:2): 1% – 5% (essential fatty acid beneficial for dry or sensitive skin)

Palmitic Acid (C16:0): 7% – 12% (helps form a protective barrier on the skin)

Stearic Acid (C18:0): 2% – 5% (minor amount, contributes to smooth texture)

Arachidonic Acid: Trace amounts

Vitamins: Rich in Vitamin E (tocopherols) and squalene, which provide antioxidant properties

Typical Specifications:

Saponification Value: 185 – 195 mg KOH/g (measure of oil’s ability to be saponified)

Iodine Value: 75 – 80 g I₂/100g (indicates the degree of unsaturation)

Acid Value: < 2 mg KOH/g (measure of free fatty acids, indicating quality and shelf life)

Peroxide Value: < 10 meq O₂/kg (indicator of rancidity; low values ensure freshness)

Refractive Index: 1.460 – 1.470 (a measure of the oil's purity and composition)

Stability and Usage:

Oxidation Stability: Good due to high monounsaturated fat content, though sensitive to heat and light exposure.

Melting Point: Liquid at room temperature

Solubility: Insoluble in water, soluble in oils and alcohols