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- W2037645904 abstract "Abstract: Concern is continuously raised about the safety of parabens which are present in most of the cosmetic preparations. In this investigation, methyl‐, ethyl‐, propyl‐ and butyl paraben (MP, EP, PP, BP), in a commercial cosmetic lotion, were deposited on human skin fragments, collected after surgical operations. Permeated parabens were determined after their passage through human epidermis–dermis layers, fixed on Franz diffusion cells. Bovine serum albumin (3%) was employed as receptor fluid. Then, parabens were assessed by liquid chromatography. The objective of this research was to determine the permeation of these molecules through human epidermis–dermis layers, and their possible passage to body tissues and/or accumulation in skin layers. Two groups of experiments were performed. In the first experimental group (G1), unique doses of the cosmetic were deposited on skin fragments fixed on Franz cells ( n = 6), at time 0 h, followed with different withdrawn times of the receptor fluid at 12, 24 and 36 h. G1 results demonstrated that parabens penetration was influenced by their lipophilicity: more lipophilic the parabens were (BP > PP > EP > MP), less they crossed the skin layers (BP < PP < EP < MP). The second experimental group (G2) was constituted of three equal deposits on each Franz cell ( n = 6) at different hour times 0, 12 and 24 h followed with three withdrawn times of the receptor fluid at 12, 24 and 36 h. The G2 results indicated that investigated parabens had significant increasing permeations in skin layers. This situation provokes the accumulation of these molecules which were considered by some authors as the cause of skin toxicities and carcinogenicity." @default.
- W2037645904 created "2016-06-24" @default.
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- W2037645904 date "2007-09-05" @default.
- W2037645904 modified "2023-10-13" @default.
- W2037645904 title "Assessment of principal parabens used in cosmetics after their passage through human epidermis?dermis layers (ex-vivo study)" @default.
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- W2037645904 doi "https://doi.org/10.1111/j.1600-0625.2007.00625.x" @default.
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