"Aging skin is functionally anaerobic" is a real line from a real study, and it's a better description of what's happening than most anti-aging marketing manages.

Coenzyme Q10 (CoQ10) sits inside the inner membrane of your mitochondria, where it's a working part of the electron transport chain — the machinery that converts nutrients into ATP, the energy currency every cell spends to function. It's not a beauty ingredient by origin. It's basic cellular infrastructure.

The shift researchers actually measured

A study comparing keratinocytes from young and older skin biopsies found significant age-dependent differences in mitochondrial function — energy metabolism shifting away from the efficient, oxygen-based mitochondrial pathway toward a less efficient, non-mitochondrial one. The researchers described older skin as functioning in a state closer to anaerobic metabolism than younger skin does [1].

A follow-up study using human epidermis biopsies confirmed the pattern directly: mitochondrial respiration and ATP production both declined with donor age. When researchers administered the reduced form of CoQ10 (ubiquinol) to the tissue, respiratory parameters measurably regenerated — the first time this had been shown ex vivo in human epidermis [2]. CoQ10 synthesis itself is known to decline with age across tissues, skin included, which compounds the problem it's meant to solve [3].

Researchers studying this phenomenon have proposed what they call the "defective powerhouse model" of premature skin aging — a framework combining two separate sources of mitochondrial damage: UV-induced mutations to mitochondrial DNA, and infrared-radiation-induced dysfunction in the electron transport chain itself, the same chain CoQ10 operates within [2]. The model treats sun exposure not just as a UV problem, but as a combined UV-and-infrared assault on the cell's actual energy-generating hardware — which is part of why "sun damage" shows up as more than surface pigmentation. It's compounding a cellular energy deficit that's already accumulating from age alone.

Why this sounds familiar

If this narrative — cellular energy production declining with age, then becoming the actual driver of visible aging rather than just a side effect — sounds like the NAD+ story, that's not a coincidence. CoQ10 and NAD+ are different molecules working at different points in the same energy economy. CoQ10 shuttles electrons within the mitochondrial membrane. NAD+ is the coenzyme that feeds electrons into that chain in the first place and is required for hundreds of other cellular repair reactions beyond energy production alone. They're not redundant; they're two separate levers on the same underlying machinery.

There's also an underappreciated compounding factor worth knowing about, particularly relevant for women over 50: statins, among the most widely prescribed medications for managing cholesterol, work by inhibiting an enzyme in the mevalonate pathway — the same pathway responsible for synthesizing CoQ10 in the body. Research on human dermal fibroblasts found that this inhibition can trigger oxidative stress and mitochondrial dysfunction in skin cells directly, on top of the decline already happening from age alone [4]. This isn't a reason to avoid a medically necessary medication — it's a reason to recognize that some of the most common prescriptions among this age group may be quietly adding to a cellular energy deficit that's already underway for unrelated reasons.

What "functionally anaerobic" skin looks like day to day

It looks like exactly what most people over 50 report: skin that seems to work harder for less — slower to bounce back after a bad night, slower to recover from irritation, less able to keep up with the daily repair job it used to do without effort. That's not a cosmetic complaint. It's a description of mitochondria running short — and it's worth taking seriously as a physiological explanation rather than writing it off as simply "getting older" in the vague, unaddressable sense that phrase usually implies.

Why CoQ10 is genuinely hard to formulate well

Part of why CoQ10 skincare varies so much in effectiveness comes down to basic chemistry, not marketing. CoQ10 has low water solubility, poor skin permeability, and inherent instability — properties that make it difficult to deliver to living tissue in a form the cell can actually use [4]. Researchers have experimented with delivery systems like protransfersome-loaded emulgels specifically to solve this problem, because the molecule itself, applied conventionally, often can't cross the barrier it's meant to support.

CoQ10's relevance also isn't confined to skin. In reproductive biology, researchers found that age-related decline in oocyte quality — one of the earliest physiological functions to decline with age — is tied to diminished expression of the enzymes responsible for CoQ10 production. Administering CoQ10 was able to reverse aspects of this age-related decline in animal models, restoring ATP production and reducing mitochondrial dysfunction [5]. It's a reminder that CoQ10 isn't a "skin ingredient" that happens to exist — it's a whole-body energy molecule, and skin is simply one of the tissues where its decline becomes visible.

Honest expectations

• What's well-established: mitochondrial ATP production in skin measurably declines with age; CoQ10 depletion is part of that decline.
• What's promising but earlier-stage: topical CoQ10 delivery and stability, since it's a large, fat-soluble molecule that's genuinely difficult to formulate effectively.
• What compounds over weeks, not days: any intervention targeting cellular energy — results build as repair capacity is restored, not overnight.

Your skin isn't failing to keep up because it's lazy. It's running on a smaller energy budget than it used to have. That's a solvable problem, not an inevitable one — and treating it as inevitable is exactly the mindset that keeps people reaching for the wrong category of product.

With love,
MISOORA

References
[1] Blatt T, Wittern K, et al. Aging skin is functionally anaerobic: importance of coenzyme Q10 for anti-aging skin care. PubMed. Read the study
[2] Schniertshauer D, Gebhard D, Bergemann J. Age-Dependent Loss of Mitochondrial Function in Epithelial Tissue Can Be Reversed by Coenzyme Q10. 2018. Read the study
[3] Modulation of Coenzyme Q10 content and oxidative status in human dermal fibroblasts. Aging. 2019. Read the study
[4] Modulation of Coenzyme Q10 content and oxidative status in human dermal fibroblasts using an HMG-CoA reductase inhibitor. PMC. Read the study
[5] Improving the anti-ageing activity of coenzyme Q10 through protransfersome-loaded emulgel. Sci Rep. 2022. Read the study
[6] Bentov Y, et al. Coenzyme Q10 restores oocyte mitochondrial function and fertility during reproductive aging. PMC. Read the study

Disclaimer. MISOORA products are cosmetics. They are not intended to diagnose, treat, cure or prevent any disease, and nothing here is medical advice. The research cited describes CoQ10 and mitochondrial biology in general and is not a clinical trial of this product; this product does not contain CoQ10. If you are pregnant, breastfeeding, taking medication or under medical supervision, consult a healthcare professional before use. Full ingredient list is published on the product page.