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December 2020 in “European journal of pharmaceutics and biopharmaceutics” Caffeine penetrates skin quickly through open hair follicles, but less through closed ones, with levels becoming equal after 22 hours.
33 citations,
August 2009 in “European journal of pharmaceutics and biopharmaceutics” Pig ear skin is better than human skin for testing how well barrier creams block allergens from entering hair follicles.
19 citations,
February 2014 in “European journal of pharmaceutics and biopharmaceutics” Encapsulated Garcinia mangostana extract in cream penetrates skin better than other forms.
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39 citations,
November 2016 in “Pharmaceutics” The hair follicle pathway significantly affects how easily water-loving chemicals pass through the skin.