18 citations
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October 2016 in “European Journal of Pharmaceutics and Biopharmaceutics” In this study, FITC-labeled BSA nanocarriers delivered a model drug deeper into porcine ear skin hair follicles than the carriers themselves, as shown by confocal microscopy.
August 1994 in “Journal of Dermatological Science” 
67 citations
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January 2012 in “Biological and Pharmaceutical Bulletin” This study found that nanoparticles did not permeate intact rat skin but could penetrate skin that had been artificially punctured, primarily through grooves or hair follicles.
36 citations
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February 1998 in “Journal of Anatomy” This study used fibre optic confocal imaging to visualize subsurface structures in live mouse skin, revealing cellular details and blood vessel networks that dynamic events could be studied in vivo.
31 citations
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September 2014 in “Journal of Pharmaceutical Sciences” This study found that Er–YAG laser treatment significantly enhanced skin absorption and follicular delivery of antialopecia drugs, suggesting a potential laser-assisted approach to treat alopecia.