Rebuild Collagen and Protect the Skin Barrier with Supercritical CO₂ Extracts

Key Takeaways

  • The CO₂ Hybrid Edge: Supercritical CO₂ extracts bridge pressed oils and essential oils, delivering ultra-concentrated lipids that signal skin receptors (PPAR-α/γ) to rebuild the skin barrier.

  • Sea Buckthorn Berry (Omega-7 & Carotenoids): Shuts down the primary inflammation switch (NF-κB), repairs skin redness, and accelerates recovery after lasers or chemical peels.

  • Rosehip Seed (Essential Fatty Acids & Retinoic Acid): Keeps sebum fluid to prevent clogged pores and boosts ceramide pathways for gentle, sting-free retinoid renewal.

  • Raspberry Seed (Ellagic Acid & Tocopherols): Acts as an antioxidant shield that blocks UV-activated enzymes (MMPs) from breaking down structural collagen.

  • Sandalwood Kernel (Ximenynic Acid): Suppresses elastase to prevent wrinkles while actively stimulating microcirculation to revive dull, sluggish skin.

When creating a skin serum there are several pressed oils that make the magic, supporting the lipid barrier, stimulating collagen production, and protecting from UV and oxidative damage. Some of these oils have increased concentration when extracted using supercritical carbon dioxide (CO₂). In a way, the CO₂ extracts are a cross between an essential oil and a pressed oil.

Fats Build and Protect

These concentrated lipids harmonize well with the stratum corneum. They fill in and mimic the feel and support of the lipid barrier. Linoleic and linolenic acids restore flexibility. Palmitoleic acid (omega-7) seals micro-cracks, and tocopherols slow the chain reaction that eats collagen. The skin receives instructions from these molecules through receptors like PPAR-α and PPAR-γ. This is that world of lock-and-key, message to repair I demonstrate so often when discussing the activity of essential oils. The fatty acids and nutrient compounds in the supercritical extracts are understood in the same way.

Sea Buckthorn Berries and Pressed Oil

Sea Buckthorn Berry CO₂ (Pulp and Seed)

Bright orange, thick, smells like sun-dried fruit with a hint of sea air. The color is a rich expression of β-carotene, zeaxanthin, and lycopene. Sea buckthorn is rich in palmitoleic acid, an omega-7 fatty acid that strengthens the barrier and supports collagen repair. It binds with the PPAR-α receptor inside keratinocytes and stimulates fresh barrier lipids. It calms NF-κB, the cell’s main inflammation switch, lowering redness, accelerating repair, and starts sealing micro-cracks. Carotenoids mop up free radicals so collagen stays intact. Sea buckthorn CO₂ would be beneficial in a serum following laser or peel to cut recovery time.

Rosehip Seed CO₂

Pressed rosehip seed oil is long valued for wound support and skin renewal. The CO₂ version magnifies its active profile. High linolenic and linoleic acids keep sebum fluid, reduce the chance of comedones, and feed ceramide-building pathways for a stronger barrier. Trace amounts of all-trans-retinoic acid give mild retinoid benefits without prescription sting. Early clinical and in-vitro work also shows faster epithelial repair and visible skin-quality improvement.

Raspberry Seed CO₂

Raspberry is another antioxidant powerhouse. Its ellagic acid shields collagen from UV-generated MMPs, a family of enzymes responsible for degrading the extracellular matrix. There’s a natural 1:3 omega-3 to omega-6 ratio that balances and reduces inflammation. The tocopherol content provides a potent, cell-protective antioxidant function. Raspberry seed CO₂ carotenoids, β-carotene and lutein, enhance the extract's strong antioxidant profile. Cranberry and blackberry have very similar structure and activity.

Sandalwood Kernel CO₂

Most people know the scent and therapeutic action of the essential oil distilled from the sandalwood tree. The kernel extract is not the same. It is a potent skin remedy in its own right, rich in the unique ximenynic acid. This unusual fatty acid down-regulates elastase and MMP-2, preventing collagen breakdown. It also improves microcirculation, warming sluggish skin and carrying nutrients deeper. This is a relatively new yet highly valuable skin-care ingredient.

Experience the power of CO₂ extracts

The power of these CO₂ extracts, and more, is in:
PERFECT SKIN PROTECT & HEALTHY-AGING SERUM

ILLUMINATE FACIAL TREATMENT SERUM



References

  1. Kumar B, Narayan DP, Negi VS. Randomized clinical trial of Hippophae rhamnoides (sea-buckthorn) cream versus silver sulfadiazine in the management of second-degree burns. Burns. 2002;28(7):715-721.

  2. Zhang LT, Li XH, Chen Y, Liu S. Sea-buckthorn oil accelerates wound healing in a rat burn model. J Ethnopharmacol. 2008;115(1):68-73.

  3. Yang T, Chen J, Wu L, Xu G. Sea-buckthorn seed oil activates PPAR-α and shields human keratinocytes from UVA-induced oxidative stress. J Dermatol Sci. 2016;81(2):112-120.

  4. Kallio R, Yang B, Peippo P. Carotenoids and tocopherols of organically cultivated sea-buckthorn (Hippophae rhamnoides) berries and berry products. J Agric Food Chem. 2002;50(3):394-396.

  5. Downing DT, Stewart ME, Strauss JS. Essential fatty acids and acne. Journal of Investigative Dermatology.1986;87(3):310-313.

  6. Effect of extraction process on rosehip oil: carotenoids and retinoic-acid enrichment. J Am Oil Chem Soc.2006;83:643-648.

  7. Oils of Rosa canina: composition and dermatologic relevance. J Am Oil Chem Soc. 2002;79:769-775.

  8. Topical Rosa canina oil improves cutaneous wound healing in rats. Wound Repair Regen. 2015;23:381-388.

  9. Clinical evaluation of rosehip oil on signs of facial ageing. Cosmetics. 2023;10(3):125.

  10. Kähkönen MP, Heinonen M. Antioxidant activity and polyphenol, tocopherol, and carotenoid composition of berry seed oils. Journal of Agricultural and Food Chemistry. 2003;51(14):3597-3604.

  11. Xia S, Huang G. Ximenynic acid isolated from Santalum spicatum seeds suppresses elastase and MMP-2 expression in UV-irradiated fibroblasts. J Ethnopharmacol. 2017;209:203-210.

  12. Wang L, Delton-Vivien LK. Sandalwood seed oil enhances microvascular circulation in human skin explants. Skin Pharmacol Physiol. 2021;34(5):301-308.

  13. Morrison DA, Hart PH. Chemical composition and cosmetic potential of sandalwood (kernel) CO₂ extract: a review. Cosmetics. 2022;9(4):108.





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Jimm Harrison

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    Jimm Harrison

    Jimm Harrison has spent more than thirty years working with essential oils and sensory wellness. He founded and led the Essential Oil Certificate Program at Bastyr University, wrote a textbook for beauty and wellness professionals, and has designed scent experiences for spas, resorts, and wellness destinations around the world.

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