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Polypropylene and polyethylene are plastic polymers used as materials to create barriers that prevent liquid leakage in products. They form a protective, water-resistant layer and are not active ingredients in skincare products applied directly to the skin.
No specific concern data available
Safety summary
Polypropylene and polyethylene are inert plastics generally considered safe for external contact. They are not absorbed by the skin and pose no known irritation or sensitization risks when used as barrier materials.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.