Hydroxydecyl Ubiquinone
Reviewed by Kate · Last updated 18 Aug 2026
Antioxidant ingredient
At a glance
EWG Safety Score
What Is Hydroxydecyl Ubiquinone?
Hydroxydecyl Ubiquinone is a cosmetic ingredient. It is grouped in the Antioxidant category on this site.
There is limited independent published research on its topical use, so this entry describes what the ingredient is rather than making specific performance claims.
Benefits for Your Skin
How widely it's used
Regulatory information
Standardised cosmetic-ingredient identifiers used by regulators.
Show identifiers
- INCI Name
- HYDROXYDECYL UBIQUINONE
- INN Name
- Idebenone [INN:JAN]
- EC Number
- -
- Function
- Antioxidant
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Hydroxydecyl Ubiquinone is a variant of Idebenone, the form you will most often see on an ingredients list.
Idebenone is a synthetic antioxidant similar to coenzyme Q10.
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