The Science

What makes AJC Sage a "Biotech" brand?

At AJC Sage, we define "Biotech" as a commitment to molecular precision. While traditional skincare often relies on whole plant extracts (which can be inconsistent in purity), we prioritize biotechnology-derived isolates to target the stalled barrier. For us, being a biotech brand means we use lab-engineered and bio-fermented ingredients that are bio-identical to your skin’s own chemistry.

We use a "Full-Stack" approach to biotech formulation:

• Bio-Fermented Actives: We use Neossance™ Squalane, Hyaluronic Acid, and Ceramides that are produced through sustainable fermentation. These are purer, more stable, and more "skin-compatible" than their traditionally farmed counterparts.

• Bio-Catalysts: We use Cyanocobalamin (Vitamin B12)—a high-complexity nutrient produced via microbial synthesis.¹ This biotech active acts as a "reset button" for reactive, stalled skin.²

• Microbial Bio-Polymers: We use fermented polysaccharides like Xanthan Gum to create a breathable, high-performance matrix that supports the barrier's structure.³
Is every ingredient in these formulas Biotech-made?

Not necessarily. A high-performance formula for a stalled barrier requires a sophisticated blend of different technologies. We lead with biotech precision, but we balance it with two other vital pillars:

1. Precision Botanical Isolates: We use high-purity molecules like Madecassoside, Asiaticoside, and Guaiazulene. Unlike broad "plant extracts," these are purified versions of the most potent parts of the plant. They provide the specific "signal" your skin needs without the "noise" or potential allergens found in raw botanical extracts.⁴

2. Strategic Lipids & Emollients: We use stable, functional ingredients like C12-15 Alkyl Benzoate and targeted natural oils like Evening Primrose Oil. These are chosen specifically for their fatty acid profiles and their ability to deliver our biotech actives deep into the skin with a refined, professional finish.
Why choose Biotech over traditional "Natural" skincare?

Consistency and Purity. A plant grown in a field is subject to changes in soil, rain, and pesticides, meaning a "natural" extract can be different in every batch. Biotech is predictable. By using ingredients produced in controlled environments, we ensure that every bottle of AJC Sage contains the exact same molecular weight and potency.

For a stalled barrier, this consistency is everything. Your skin doesn't have to "guess" what it’s receiving; it gets the same precise, bio-identical repair signals every single time.
Why do you formulate acrylate-free?

With acrylate monomer allergies on the rise, we take a "better safe than sorry" approach for our sensitve-skin customers. While the large acrylate polymers used to thicken standard skincare are not proven to cause allergies directly, cosmetic chemistry data shows they can contain microscopic trace amounts of residual, unreacted monomers.

Unlike some allergies where 'micro-dosing' an allergen can help build tolerance, contact allergies are a Type IV hypersensitivity. This means that repeated, low-grade exposure to trace monomers doesn't train the skin to tolerate them; instead, it can trigger a cycle of chronic, low-grade contact dermatitis, resulting in rough, persistently unhappy skin.

By keeping our formulas 100% acrylate-free, we eliminate the risk of delayed reactions from leave-on exposure. We formulate specifically so that hyper-reactive skin can finally rest, repair, and thrive without constant low-level triggers.

What is the pH of your products?

At AJC Sage, we prioritize precise formulation pH because it directly dictates barrier health. While traditional advice suggests matching your skin's baseline pH, clinical studies show that skin pH naturally rises and becomes more alkaline as we age, compromising the barrier.

To counteract this, we intentionally formulate the hydrous (water-based) products in our Biomimetic line (Triple Lipid Cica Cream and Peptide Ceramilk) to an optimal, slightly lower pH of 4.9. Advanced buffer systems are engineered into each batch to prevent pH drift over time, ensuring our actives and preservatives remain perfectly stable, robust, and supportive of your skin's natural acid mantle.

Is AJC Sage a clean beauty brand?

We choose Biotech Precision over Clean Trends. We prioritize ingredient purity and clinical data over 'natural' marketing.
Do you use fragrance or essential oils?

While some ingredients may contain a natural scent, fragrance or essential oils are never added in consideration of consumers with sensitive skin.

What makes these formulas "Biomimetic"?

We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Is your Biomimetic line good for people who use vitamin A treatments like tretinoin?

Consistency and Purity. A plant grown in a field is subject to changes in soil, rain, and pesticides, meaning a "natural" extract can be different in every batch. Biotech is predictable. By using ingredients produced in controlled environments, we ensure that every bottle of AJC Sage contains the exact same molecular weight and potency.

For a stalled barrier, this consistency is everything. Your skin doesn't have to "guess" what it’s receiving; it gets the same precise, bio-identical repair signals every single time.
Why is your Biomimetic line formulated to be low in oleic acid?

Oils containing high levels of oleic acid are generally very safe and effective emollients for healthy skin. In fact, it is naturally produced in sebum and can enhance skincare absorption. However, studies have shown that adding high levels of oleic acid to your routine may be detrimental and irritating to compromised barriers. Because our primary focus is barrier restoration, we chose to keep supplemental oleic acid concentrations near zero, prioritizing barrier-supportive lipids instead.

1. Calvillo, Á., Pellicer, T., et al. (2022). Bioprocess Strategies for Vitamin B12Production by Microbial Fermentation and Its Market Applications.Bioengineering (Basel, Switzerland),9(8), 365. https://doi.org/10.3390/bioengineering9080365

4. Cosmetic Ingredient Review. (2018). Amended safety assessment of acrylates copolymers as used in cosmetics. https://www.cir-safety.org/sites/default/files/acryco092018TAR.pdf

5. Kaplan, D.H., et al. (2012). [Early immune events in the induction of allergic contact dermatitis.] Nature's Review Immunology, 12, 114-124.

Schulte to Brinke, A., et al. (2021). [Acidification of the Skin and Maintenance of the Physiological Skin pH Value by Buffered Skin Care Products Formulated around pH 4]. Journal of Cosmetics, Dermatological Sciences and Applications, 11, 44-57.

2. Stücker, M., Pieck, C., Stoerb, C., Niedner, R., Hartung, J., & Altmeyer, P. (2004). Topical vitamin B12-a new therapeutic approach in atopic dermatitis-evaluation of efficacy and tolerability in a randomized placebo-controlled multicentre clinical trial. British Journal of Dermatology, 150, 977–983. https://doi.org/10.1111/j.1365-2133.2004.05866.x

3. Fiume, M. M., et al. (2016). Safety Assessment of Microbial Polysaccharide Gums as Used in Cosmetics. International Journal of Toxicology. https://doi.org/10.1177/1091581816651606

4. Cosmetic Ingredient Review. (2018). Amended safety assessment of acrylates copolymers as used in cosmetics. https://www.cir-safety.org/sites/default/files/acryco092018TAR.pdf

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10. Jiang, S. J., et al. (2003). Examination of the mechanism of oleic acid-induced percutaneous penetration enhancement: an ultrastructural study.Biological & pharmaceutical bulletin,26(1), 66–68. https://doi.org/10.1248/bpb.26.66

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