Hydroquinone
INCI: HYDROQUINONE
Also known as: HQ
Key Facts
- CAS Number
- 123-31-9
- Category
- active
- Risk Level
- high
- Common Allergen
- Yes
- EU Status
- Restricted
- Max Concentration
- 2% (OTC US), banned in EU cosmetics
- Found In
- spot treatment, brightening cream
What is Hydroquinone?
Most potent skin lightening agent. Banned OTC in EU. Prescription-only in many countries due to safety concerns.
Allergy & Safety Information
Can cause ochronosis (paradoxical darkening) with prolonged use. Banned in EU cosmetics. Use only under medical supervision.
Frequently Asked Questions
Is Hydroquinone safe for sensitive skin?
Hydroquinone is a known allergen and is generally not recommended for sensitive skin. Consider patch testing before use.
What products contain Hydroquinone?
Hydroquinone is commonly found in spot treatment, brightening cream.
What does Hydroquinone do in cosmetics?
Hydroquinone functions as a active in formulations.
Is Hydroquinone causing YOUR skin reactions?
SkinDetekt tracks your products and reactions to find your personal triggers. Download the app to find out.
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