Optical Brighteners in Laundry
optical brighteners · fluorescent whitening agents · fwa
Fluorescent UV-absorbing chemicals that make whites appear brighter. They deposit on fabric and transfer to skin with wear — a concern given their potential to be skin sensitizers and endocrine disruptors.
Concerns
- Skin sensitization and contact allergy — particularly with sun exposure (photoallergy)
- Potential endocrine disruption in some stilbene derivatives [inference]
- Poor biodegradability — aquatic toxicity
- Remain deposited on fabric through washing — continuous skin transfer
Regulatory flags
- ⚑Some stilbene-based brighteners restricted in EU
- ⚑Environmental persistence concerns — some bioaccumulate
Commonly found in
Safer swaps we'd look at
Branch Basics
Branch Basics Concentrate
One bottle replaces your entire cleaning cabinet.
Why it's cleaner
No flagged ingredients in our current review; key ingredients include Coco glucoside, Decyl glucoside, Chamomile extract.
Sources & references
Last researched: April 18, 2026
Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.
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