September 2010 in “Reactions Weekly” A woman was allergic to 5% minoxidil, with stronger reactions to higher concentrations.
4 citations
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October 2018 in “Skin appendage disorders” Co-washing is gentler on hair but can cause residue buildup.
June 1992 in “Inpharma Weekly” Patch testing with different solvents helps find the right minoxidil formulation for those with scalp allergies.
13 citations
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November 2012 in “Journal of The European Academy of Dermatology and Venereology” Certain factors like allergies, nail problems, and hair loss patterns can predict how well someone with patchy hair loss will respond to skin cream treatments.
45 citations
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August 1954 in “Experimental Biology and Medicine” Vitamin A penetrates guinea pig skin quickly in alcohol, affects skin thickness, but doesn't impact hair growth.