all people here claim topical minoxidil penetrate the skin and becomes systemical. so it spreads all over the body and reduces collagen production in all skin cells.
I'd like to read medical research that prove it.
in this forum a guy shows 2 reasearches that prove minoxidil reduces collagen production in human cells.
do you think using treitoin (aka retinA, collagen increaser) on my face would counter the side...