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  • Percutaneous absorption of benzoic acid across human skin. I. In vitro experiments and mathematical modeling.

Percutaneous absorption of benzoic acid across human skin. I. In vitro experiments and mathematical modeling.

Pharmaceutical research (1990-03-01)
G E Parry, A L Bunge, G D Silcox, L K Pershing, D W Pershing
ABSTRACT

The percutaneous absorption of benzoic acid across human skin in vitro was experimentally and mathematically modeled. Skin partition coefficients were measured over a range of benzoic acid concentrations in both saline and distilled water. The permeation of benzoic acid was measured across isolated stratum corneum, stratum corneum and epidermis, and split-thickness skin. These experiments demonstrated that the stratum corneum was the rate-limiting barrier and that the flux is proportional to the concentration of the undissociated species. The permeation data were analyzed with a comprehensive non-steady-state mathematical model of diffusion across skin. Two adjustable parameters, the effective skin thickness and diffusivity, were fit to the permeation data by nonlinear regression.

MATERIALS
Product Number
Brand
Product Description

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