Coenzyme Q10
INCI · Ubiquinone · also CoQ10, Ubiquinone, Ubidecarenone
How it works
Coenzyme Q10, ubiquinone on a label, sits in the mitochondrial electron transport chain where it moves electrons during energy production. It is also a fat-soluble antioxidant embedded in cell membranes, where it interrupts lipid peroxidation — the chain reaction by which one damaged fat molecule damages the next.
Skin levels decline with age and fall further with ultraviolet exposure, which is the rationale for replacing it topically. Applied to skin, it reduces markers of oxidative stress and has been shown to suppress collagenase expression in fibroblasts after UVA exposure, meaning less of the enzyme that breaks collagen down.
The evidence
The most-cited human work is a study using 0.3% ubiquinone over several months, which found reduced crow's-feet wrinkle depth alongside the mechanistic findings above. That is a real result on a real endpoint, and it is also a modest one — nothing here competes with a retinoid for measurable wrinkle change.
The limitation is physical. CoQ10 is a large, highly lipophilic molecule, and penetration past the stratum corneum is poor; much of what is applied stays at the surface. Ubiquinol, the reduced form, is more bioavailable and less stable, and formulations increasingly use it or a solubilised carrier system for that reason.
Suitability
- Ageing and photodamaged skin: the intended use, best as part of an antioxidant layer
- Sensitive skin: one of the least irritating antioxidants available
- Anyone who cannot tolerate vitamin C at effective strength
Concentration
Typically 0.3% to 1%. Higher is limited by solubility and by the bright orange colour the raw material carries, which is also why a CoQ10 product is usually tinted and why a colourless one may contain very little.
Conflicts & combinations
No conflicts, and one genuinely useful pairing: antioxidants work as a network, and CoQ10 sits alongside vitamin C and vitamin E rather than competing with them — vitamin C regenerates vitamin E, and CoQ10 protects the lipid phase the others reach less well. Treat all of them as support for sunscreen rather than substitutes: preventing the damage remains far more effective than mopping it up.
- Effective from
- 0.3%
- Max safe
- 1%
Does CoQ10 reduce wrinkles?
A study at 0.3% over several months found reduced crow's-feet depth. It is a real but modest result — nothing here competes with a retinoid for measurable wrinkle change.
Why is CoQ10 skincare orange?
The raw material is bright orange. A colourless CoQ10 product may contain very little of it.
What is the difference between ubiquinone and ubiquinol?
Ubiquinol is the reduced form — more bioavailable and less stable. Formulations increasingly use it or a solubilised carrier to get around poor penetration.
Can I use CoQ10 with vitamin C?
Yes, and it is a sensible pairing. Antioxidants work as a network: CoQ10 protects the lipid phase that water-soluble antioxidants reach less well.
Is CoQ10 safe in pregnancy?
Yes — it is a well-tolerated antioxidant the body already produces, with no pregnancy-specific concern topically.
- PubMedPMID 10416055 ↗