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This is not a recognized INCI name for a cosmetic ingredient. Percentages typically indicate the concentration of an ingredient within a product, not an ingredient itself.
No specific concern data available
Safety summary
As '1%' is not an ingredient, its safety cannot be assessed. The safety profile depends entirely on the specific ingredient it refers to and its concentration.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.