Skip to content

Antioxidant

ISOQUERCITRIN

CAS 21637-25-2 Updated
80

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A flavonoid antioxidant naturally found in plants like onion and St. John's wort. Provides oxidative-stress protection on skin with no notable safety concerns.

Skin benefits

  • Plant-derived flavonoid antioxidant
  • Helps neutralize free radicals
  • Supports skin defence against oxidative stress

Known concerns

  • Slight yellow tint at high levels
  • Limited topical clinical data

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related antioxidants

80
(LICORICE/REYNOUTRIA JAPONICA) ROOT/STEM EXTRACT
Antioxidant
 80
ACALYPHA REPTANS CALLUS CULTURE EXTRACT
Antioxidant
 80
ACCA SELLOWIANA FRUIT EXTRACT
Antioxidant
 80
ACETYL ZINGERONE
Antioxidant
 80
ACETYL ZINGERONE METHYL ETHER
Antioxidant
 80
ACTINIDIA DELICIOSA FRUIT EXTRACT
Antioxidant
 80
ADANSONIA DIGITATA FRUIT EXTRACT
Antioxidant
 80
AMPELOPSIS GROSSEDENTATA LEAF EXTRACT
Antioxidant

Check your shelf

Find ISOQUERCITRIN in your products.

Scan any cosmetic product with LuxSense to see if it contains ISOQUERCITRIN and get a full ingredient breakdown with safety scores.

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.