Argan oil is extracted by pressing the kernel inside the argan nut. The kernel is small and hard; extracting the oil requires mechanical pressure. That pressure generates heat.
Cold-pressing means keeping the temperature below 26°C throughout extraction. Above that threshold, heat begins to degrade the compounds that make argan oil effective: vitamin E (tocopherols), oleic acid, linoleic acid, and phenolic antioxidants.
What heat destroys
- Vitamin E / Tocopherols: antioxidants that neutralize free radicals and protect cell membranes. Degrade with heat.
- Oleic acid: the primary fatty acid, responsible for deep hydration and barrier support. Structurally stable but affected by prolonged heat.
- Linoleic acid: essential fatty acid that regulates sebum production and reduces inflammation. More heat-sensitive than oleic acid.
- Phenolic antioxidants: anti-inflammatory compounds with the shortest heat tolerance of the group.
Heat-extracted argan oil costs less to produce. The press runs faster, output per hour is higher, and the kernels don't need to be as carefully prepared. The oil still smells like argan oil. It still has a similar color. Without lab testing, there is no easy way to tell the difference at point of purchase.
First press versus subsequent presses
The first press of a properly prepared kernel at low temperature yields oil with the highest concentration of active compounds. Subsequent presses — running the same material through again — extract more oil but at progressively lower quality.
The equivalent standard in olive oil is "extra virgin" — first cold-press only. The same logic applies to argan. Most commodity argan oil on the market is not first press.
What to look for on a label
- "First cold-press" or "first press" — not just "cold-pressed"
- Single ingredient: Argania Spinosa Kernel Oil — nothing else
- No mention of "refined" or "deodorized" — both indicate heat treatment
- Color: unrefined first-press oil is golden with a faint nutty scent
What Bouyaik uses
Both Bouyaik products — Pure Argan Oil and Argan Oil + SPF 50 — use first cold-press grade oil extracted below 26°C. The single ingredient listed is Argania Spinosa Kernel Oil. There is nothing else in the Pure Argan Oil formula because nothing else needs to be there.
The oil in your bottle should contain what it says on the label — and nothing that isn't.