16 citations
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March 2008 in “International journal of pharmaceutics” Different factors like pH, gel type, and chemical enhancers affect how well hydrocortisone gets into hair follicles, and less hydrated skin doesn't work well with the test method.
19 citations
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January 2008 in “Journal of Pharmacy and Pharmacology” Porcine hair follicles can effectively model human hair follicles for drug absorption.
June 2014 in “Biotechnology and Bioprocess Engineering” Injecting lab-grown hair cells into the scalp can regrow hair.
34 citations
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July 2010 in “Expert Opinion on Drug Delivery” The document concludes that there is no agreed-upon best method for measuring drug delivery within hair follicles and more research is needed to validate current techniques.
11 citations
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December 2011 in “International journal of pharmaceutics” Ultrasound increases skin permeability but blocks hair follicles.