Antioxidant
HYDROXYPHENYL DIHYDROXYISOINDOLINONE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Hydroxyphenyl Dihydroxyisoindolinone — an obscure synthetic antioxidant. Plausible mechanism but very thin public data.
Hydroxyphenyl dihydroxyisoindolinone is a synthetic phenolic compound used as a cosmetic antioxidant. It is not a widely cited INCI and has minimal presence in the peer-reviewed literature. Listed in EU CosIng; no SCCS opinion. Similar isoindolinone scaffolds are used in pigments and pharmaceuticals, but cosmetic-specific safety data is minimal and supplier-dominated. Phenolic antioxidants as a class have a small but non-zero sensitisation signal, which combined with low evidence supports a conservative score.
Function
Skin benefits
- Synthetic antioxidant
- Oxidative-stress claims
Known concerns
- Very thin public safety data
- No SCCS dossier
- Phenolic-class sensitisation watch
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.