I don't know anything about how it works, but I assumed it was absorbed by the skin on your head not the actual hair.

I still doubt that putting vitamin whatever on your head everyday will actually make a difference

Yeah but you gotta remember "vitamins" is just a dumbed down term to refer to fats and compounds. It's not actually like food or anything nourishing for the hair. Like a lot of haircare stuff has vitamin e in it, which is supposed to help protect hair from hot blow drying damage and also make it shiny. A lot of the stuff is also moisturizers for your scalp.

I didn't know that. I am definitely going to keep this in mind now.

Vitamins yeah that's no good.

Things like fruit, honey, or flowers must be good though right?

I mean, my wife's honey pomegranate and hybiscus body scrub must be amazing with all that fruity yummy stuff.

PH numbers in any hair washing/conditioning product that gets rinsed out.

You end up with the PH of the water, people.