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This entry appears to be a partial or malformed ingredient listing. 'Polyquaternium' refers to a class of polymers used for conditioning, but 'Polyquaternium 0' is not a recognized INCI name.
No specific concern data available
Safety summary
Cannot provide specific safety information as 'Polyquaternium 0' is not a recognized INCI name. Polyquaterniums in general are often considered safe, but specific safety depends on the exact polymer.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.