i dont know a lot yet about hair loss treatments But skincare i do know..
everyone is different but i have good response with a pure vitamin C serum in day and retinol serum at night.
I use Drunk Elephant vitamin C and Peter Thomas Roth 1.5% retinol..I don't need moisturizer with these two my face sort of self hydrates now...also love a pumpkin mask by Peter thomas roth i use like 1 or 2x a week it exfoliates but does not dry me out.
also getting facials is good it keep pores small if you start doing it young--just be wary of then selling you stuff...been getting them since 25 about 1x a month--been slacking on it past few years but i think the stuff i am using is exfoliating.
I was told skin starts to age at 25. something to do with colagen production. If you have oily skin young this is actually GOOD for aging just keep on top of it with a good facials and be wary of products that have fragrance or other stuff in them...sometimes can have fantastic ingredient and they mess it up with additives or poor packaging.
if you like to research products they have on Paulas Choice an encyclopedia of various products and break down chemically which ones work best for price etc.
if you want to try and return Sephora at least in USA has a good return policy if something does not work out for you.
http://www.paulaschoice.com/beautypedia-skin-care-reviews?N=4294966879+4294966257&Nr=AND(Site:beautypedia,Locale:en_US)