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Petroleum Jelly Uses Petroleum Jelly Uses: Emollient and Occlusive Moisturizer for Dry Skin Mechanism: Petroleum jelly functions primarily as an occlusive moisturizer. It forms a hydrophobic barrier on the skin’s stratum corneum, preventing transepidermal water loss (TEWL). By reducing TEWL, petrolatum increases the water content of the stratum corneum, leading to improved hydration and a […]