Walk into any premium skincare store and you'll encounter both. Argan oil — 'liquid gold' from Morocco — has been a prestige skincare ingredient since the early 2010s. Macadamia oil, native to Queensland and northern NSW, has grown into a legitimate competitor with a distinct advantage: its fatty acid profile is unlike any other plant oil used in skincare. Both are excellent. Neither is universally superior. Which one works better depends on your specific skin type, your concerns, and the role the oil plays in your routine.
Fatty Acid Profiles: Where It All Starts
The functional properties of any plant oil in skincare are determined primarily by its fatty acid composition. Understanding the profiles of these two oils explains most of the differences in how they behave on skin.
Macadamia oil is distinguished above all by its palmitoleic acid (omega-7) content: approximately 16–22% of total fatty acids. This is the highest palmitoleic acid concentration of any plant-derived skincare oil. Palmitoleic acid is a naturally occurring component of human sebum — particularly in younger skin — and its concentration declines progressively with age. The remaining composition is dominated by oleic acid (58–60%), with smaller amounts of palmitic and stearic acids.
Argan oil is primarily oleic acid (43–49%) and linoleic acid (29–36%), with smaller amounts of palmitic and stearic acids. It also contains tocopherols (Vitamin E compounds) at relatively high concentrations — typically 600–900mg per kilogram — and squalene. The linoleic acid content is notably higher than macadamia oil.
How Each Oil Interacts With Skin
Oleic acid, present significantly in both oils, is particularly effective at penetrating the stratum corneum because it is similar in structure to the phospholipids in skin cell membranes. This is why oleic-acid-rich oils tend to feel nourishing and relatively fast-absorbing on dry skin. However, for acne-prone or oily skin, high oleic acid content can sometimes contribute to comedone formation.
Macadamia oil's palmitoleic acid content is where it becomes genuinely distinctive. As skin ages and sebum composition changes, palmitoleic acid in sebum declines. The skin's ability to maintain barrier function and prevent transepidermal water loss is partly linked to its lipid composition. Applying macadamia oil topically effectively supplements this declining component — which is why it performs particularly well on mature, dry and barrier-compromised skin. It absorbs quickly without the heavy or greasy feeling of more saturated oils.
Argan oil's higher linoleic acid content is its point of differentiation. Linoleic acid (omega-6) is an essential fatty acid that human skin cannot synthesise and must obtain from diet or topical application. Deficiency in skin linoleic acid is associated with impaired barrier function and increased transepidermal water loss. Argan oil's higher linoleic content makes it somewhat more appropriate for acne-prone skin — research has found that acne-prone skin often has lower linoleic acid concentrations in sebum — and supports barrier repair in skin with compromised lipid composition.
Argan oil's tocopherol content is also significant. Vitamin E provides antioxidant protection against lipid peroxidation both in the bottle and on skin. This contributes to argan oil's shelf stability and its antioxidant activity on skin. Macadamia oil has lower tocopherol content, affecting its shelf life.
Dry Skin: A Head-to-Head Comparison
For classic dry skin — characterised by tightness, flakiness, reduced oil production and a compromised barrier — macadamia oil has a slight functional edge, particularly for mature dry skin. Its palmitoleic acid content directly addresses one of the mechanisms of age-related skin dryness, and its fatty acid profile is exceptionally compatible with the skin's own lipid composition. It absorbs quickly and tends to leave skin soft and supple without heaviness.
Argan oil is also excellent for dry skin and arguably more versatile — it sits comfortably on the barrier without aggravating oily zones, which makes it better for dry-combination skin types than macadamia, which can feel slightly heavier in oily areas. Argan oil's antioxidant content also makes it a valuable addition for people with dry skin that is also ageing — the tocopherol content provides meaningful protection against oxidative damage.
For dehydrated skin — skin that lacks water rather than oil, and can occur in any skin type — neither oil is a complete solution on its own. Both help with transepidermal water loss by forming a semi-occlusive layer over skin, but this works best layered over a water-based hydrator such as hyaluronic acid or glycerin. Apply humectant serums first, then seal with a few drops of oil.
For Mature Skin: The Edge Goes to Macadamia
The palmitoleic acid argument becomes most compelling in the context of mature skin. As sebum composition changes with age — and particularly as women move through perimenopause and menopause, when significant changes in skin moisture, elasticity and barrier function occur — macadamia oil's unique fatty acid profile becomes particularly relevant. Several dermatologists and cosmetic chemists have noted macadamia oil as a preferred facial oil for this demographic, citing both its absorption profile and its palmitoleic acid content. While controlled clinical trials specifically comparing macadamia to argan on mature skin are not available, the biochemical rationale is compelling.
For Acne-Prone Skin: Proceed with Caution
Neither oil is ideal for acne-prone skin as a facial oil, primarily due to their oleic acid content. However, argan oil is the more widely used of the two in this context — its higher linoleic acid content is more appropriate for acne-prone skin, and it is less likely to trigger breakouts. For anyone with acne-prone skin interested in plant oils, rosehip oil (very high linoleic acid, plus retinoic acid precursors) is generally a better-researched choice than either macadamia or argan.
Scent, Texture and Shelf Life
Cold-pressed macadamia oil has a mild, slightly nutty scent. The texture is lightweight and absorbs quickly — faster than most plant oils used in facial skincare. It blends well in formulations. Cold-pressed argan oil has a distinctive smoky or nutty smell — a characteristic that can be polarising; commercial argan oil for cosmetic use is typically deodorised. The texture is slightly heavier than macadamia and takes a little longer to absorb, though both are considered dry oils compared to heavier options.
Shelf life is a genuine practical difference. Argan oil's high tocopherol content gives it a shelf life of approximately 18–24 months when stored correctly. Macadamia oil's lower antioxidant content means it is more susceptible to rancidity — typically best used within 12 months. Store in a dark, cool location and discard if you notice a paint-like smell indicating oxidation.
The Verdict
Mature, dry skin: macadamia. The palmitoleic acid content makes it uniquely suited to the changing lipid needs of ageing skin.
Dry-combination or sensitive skin: argan. The fatty acid balance, higher linoleic content and natural Vitamin E make it more versatile across skin types.
General antioxidant facial oil: argan, on points, due to its higher tocopherol content.
Supporting Australian native industry: macadamia, obviously — grown and produced domestically, with an increasing number of suppliers committed to ethical Australian production.
In practice, both oils are genuinely excellent, and choosing between them based on slight biochemical advantages may be less important than finding one you enjoy using consistently. The best skincare is the kind you actually use.