June 1996 in “Journal of Dermatological Science” Vitamin D3 applied to mouse skin caused more wrinkles and sagging due to changes in the skin's outer layer.
1 citations
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February 2023 in “Applied sciences” The new topical growth hormone formula has high skin penetration and bioavailability.
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.
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.
The 2% minoxidil cream is stable, spreads well on the skin, and helps with hair growth.