How to make a hot water extract of black pepper?

Hi- I'm trying to make a hot water extract of black pepper for topical use in repigmentation. Some trace water soluable elements seem to be very effective, along with piperine. I'm doing this at home. Some elements bind to ions. How to, what kind of water (not purified? distilled reionized?) and how can I know strength--is it comparable to dry extract or base product? I don't want to lose anything. Also hints on carrier methods for topical application would be nice. I'm currently using piperine oil and am familiar with the adverse effects and don't want to experience them. I don't know any threshold for topical black pepper or where to find it. Thanks for any help you can give.