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Distribution of capsaicin in the skin from capsaicin solution, chili extract solution, SLN chili and NLC chili. (a) The amount of capsaicin in the stratum corneum and (b) the amount of capsaicin in the dermis. Abbreviations: SLN, solid lipid nanoparticles; NLC, nanostructured lipid carriers. * The values are significantly different (p < 0.05) from other formulations.
