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This phrase describes the outer packaging materials (polypropylene, polyethylene) of a product, not an active ingredient used in skincare formulations. These materials do not have a function within the cosmetic product itself.
No specific concern data available
Safety summary
These are inert packaging materials and are not intended for skin contact as ingredients. They pose no direct safety concern as cosmetic ingredients.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.