Bio Gold — Bio-Identical Skin Lipid Serum | PrimalBasics

EVERY INGREDIENT, EXPLAINED

What's in the bottle

• Golden Jojoba Oil (unrefined)Sebum-mimetic carrier

  INCI: Simmondsia Chinensis Seed Oil

  First-press, unrefined, retains phytosterols and tocopherols that refinement removes. Wax-ester structure is a close match to human sebum — the skin recognises this as 'skin lipid' rather than occluding against it. Jojoba is technically a liquid wax, not an oil, and its ~98% long-chain wax ester structure gives it a stability and skin-recognition profile nothing else in the kingdom matches.

  Sourcing: First-press, unrefined. Not cosmetic-grade refined.

• Olive SqualaneBio-identical skin lipid

  INCI: Squalane

  Bio-identical to the squalene your sebaceous glands already produce, olive squalane integrates into the skin's lipid film rather than sitting on top of it. It does not oxidise meaningfully at skin temperatures or under normal light exposure. The olive-derived version (rather than the sugarcane-fermented one used by Biossance) has a cleaner provenance story and performs identically in the formula.

  Sourcing: Olive-derived, not sugarcane-fermented.

• Meadowfoam Seed Oil (unrefined)Stability anchor

  INCI: Limnanthes Alba Seed Oil

  The most oxidatively stable botanical oil routinely available. Approximately 95% of its fatty-acid profile is long-chain (C20 and above), with unsaturations at the ∆5 position rather than the more common ∆9 or ∆12. That geometric detail is why meadowfoam resists oxidation not only by its own chemistry but extends the stability of other oils it is blended with. The reason Bio Gold is preservative-free.

  Sourcing: Unrefined, cold-pressed.

• Prickly Pear Seed Oil (unrefined)Antioxidant concentrate

  INCI: Opuntia Ficus-Indica Seed Oil

  The most expensive oil in Bio Gold — a kilo of oil requires a tonne of fruit. It is included for two reasons: it is unusually rich in γ-tocopherol (about 150% the tocopherol content of argan oil, 403 mg/kg), and it carries a small linoleic acid fraction (~60%) offset by the tocopherol and phytosterol content that stabilises it. The ratio matters — prickly pear is oxidatively stable as delivered.

  Sourcing: Cold-pressed from Moroccan or Tunisian harvests.

• MCT Oil (C8/C10)Base carrier oil

  INCI: Caprylic/Capric Triglyceride

  Fractionated medium-chain triglyceride — fast-absorbing, odourless, and exceptionally stable. Pulled from coconut, refined to isolate the C8 (caprylic) and C10 (capric) chains. Base oil of the formulation — its tactile smoothness and rapid absorption are why Bio Gold feels like a serum rather than an oil despite being entirely lipid-based.

  Sourcing: Coconut-derived, fractionated.

• Sea Buckthorn CO₂ ExtractOmega-7 source

  INCI: Hippophae Rhamnoides Fruit Extract

  Our source of omega-7 palmitoleic acid — a documented driver of re-epithelialisation, the process by which keratinocytes migrate across compromised skin to rebuild barrier function. The CO₂ extraction method preserves the carotenoids and phytosterols that degrade under solvent or hot-press extraction. Human studies have documented improvements in skin moisture and elasticity with consistent omega-7 application.

  Sourcing: CO₂-extracted, not solvent or hot-press.

• Natural Bakuchiol (99%)Retinol-equivalent active

  INCI: Bakuchiol (Psoralea Corylifolia)

  The functional analog of retinol. In Dhaliwal et al. (British Journal of Dermatology, 2019), 0.5% bakuchiol delivered improvements in fine lines, firmness, and photodamage comparable to 0.5% retinol — with materially better tolerability. Unlike retinol, bakuchiol does not cause photosensitivity, does not carry pregnancy warnings, and does not require a tolerance ramp. The 99% purity version used here is extracted from the seeds of Psoralea corylifolia.

  Sourcing: 99%+ purity, seed-extracted.

• d-alpha TocopherolAntioxidant (vitamin E)

  INCI: Tocopherol

  Natural vitamin E (d-alpha is the naturally occurring stereoisomer, as opposed to the synthetic dl-alpha). Protects the formula's oxidative stability in the bottle and contributes its own antioxidant behaviour on the skin. Works in combination with the tocopherol fraction of prickly pear to give Bio Gold a multi-pathway antioxidant profile without synthetic preservatives.

  Sourcing: Natural d-alpha, not synthetic dl-alpha.

• Essential Oil Blend (Bergamot, Geranium, Rosemary)Light natural scent

  INCI: Bergamot Peel Oil, Geranium Flower Oil, Rosemary Leaf Oil

  Measured in drops. A very light scent that fades in 30–45 minutes — Bio Gold is not a fragrance product. The three oils were selected for their low sensitising profile and for the way their molecular weights balance each other: bergamot is the top note, geranium is the heart, rosemary is the base. No synthetic fragrance; each oil is listed on the label.

  Sourcing: Each oil individually listed. No bergaptene (reformulated bergamot).