Specimen No. 0144
CautionDerivedsurfactant
Cocamidopropyl Betaine (CAPB)
cocamidopropyl betaine · capb · coco betaine
A coconut-derived amphoteric surfactant used in rinse-off cleansers to boost foam and soften the cleansing action of harsher surfactants. Generally safe in rinse-off products, but can contain sensitizing impurities (DMAPA, amidoamine) that cause contact dermatitis in susceptible individuals.
medium confidence
Researched April 18, 2026Specimen 0144Cocamidopropyl Betaine (CAPB)
Concerns
- Skin sensitization from DMAPA and amidoamine impurities during synthesis
- Eye irritation — avoid contact with eyes
- Leave-on use limited to 3% due to sensitization risk
- Contact dermatitis reported in clinical patch-test studies
Documented benefits
✓ plant-derived
Regulatory flags
- ⚑Known contact sensitizer — CAPB-related compounds cause allergic contact dermatitis
Commonly found in
ShampooBody washFacial cleanserBaby washHand soap
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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