Ask ten formulators how much argan oil to put in a face serum and you will get ten different answers, and most of them will be right, because the correct ratio depends entirely on what the oil is being asked to do next to it.

Start with what argan oil actually brings to a blend

Argan oil sits in the middle of the vegetable oil spectrum: not as light and fast-absorbing as squalane or fractionated coconut oil, not as heavy and slow as castor oil or heavier butters. It carries roughly 45 percent oleic acid and 35 percent linoleic acid, along with vitamin E and plant sterols, which gives it a balanced skin feel and a moderate comedogenic rating that suits both face and body use. That middle position is exactly why it blends well rather than dominating a formula. It also means argan oil plays well with both oil-soluble actives and other carrier oils without forcing a formulator to redesign the rest of the blend around it.

Common blending ratios by product type

  • Facial serums: argan oil often makes up 20 to 40 percent of the oil phase, paired with lighter oils like squalane or jojoba to keep absorption fast and finish non-greasy.
  • Body oils and massage oils: argan oil can rise to 40 to 70 percent, since a slightly richer finish is expected and desired on larger skin areas.
  • Hair oils and serums: 15 to 30 percent is typical, blended with lighter esters so the oil coats the hair shaft without weighing down fine hair.
  • Anhydrous balms and sticks: 5 to 20 percent, balanced against butters and waxes that provide structure, as covered in bar and stick formulation more generally.

Why percentages alone do not tell the full story

Two formulas with identical argan oil percentages can feel completely different depending on what else is in the oil phase. Pairing argan oil with a heavier oil like avocado pushes the whole blend toward a richer, slower-absorbing finish, while pairing it with a lighter oil like grapeseed pulls it toward something that disappears faster on skin. Ratio decisions should always be made relative to the rest of the oil phase, not in isolation.

Blending with actives, not just other oils

Argan oil is commonly used as a carrier for oil-soluble actives such as vitamin E, certain plant extracts, or essential oils, since its own mild scent and stable texture do not interfere much with what is dissolved into it. When blending with essential oils specifically, staying within recognized safe dilution percentages for leave-on skin products matters more than the argan oil ratio itself, since essential oils carry their own sensitization limits regardless of the carrier used. A formulator switching a serum's base oil to argan rarely needs to reformulate the active-delivery system from scratch, which shortens development time on a private-label brief.

What actually breaks a blend

The most common formulation mistake is not the ratio, it is mismatched oxidative stability: pairing a highly stable oil like argan with a fast-oxidizing oil such as flaxseed or hemp seed oil shortens the shelf life of the whole blend down to the weakest ingredient's timeline, no matter how well the ratios were calculated on paper. A second common mistake is treating argan oil as a fragrance-neutral filler, when its mild nutty note can shift how a finished blend actually smells, especially in unscented or lightly scented formulas.

What this means for a private-label brief

A useful starting brief tells a formulator the product type, the target skin feel, and any actives it needs to carry, and lets the ratio follow from there rather than specifying an arbitrary percentage upfront. A supplier who can propose and test that ratio rather than just quoting a fixed formula is worth more to a growing brand than one working from a single template.

Assil Ouargane formulates argan-oil-based serums, body oils, hair oils, and balms under private label, with blending ratios tested for stability and skin feel before production. Contact us through the website to discuss your formulation brief and request a quote.