[danim]

Pardon me if this is repetitive since I have put it to another thread, but let me again advocate ginger.
To some extent, yes, putting ginger on your head does thicken your hair, sometimes quite dramatically and it can even help to reverse baldness! Cinnamon has a similar result, though it can cause a color change in the hair, it being a mild dye.
My family got this tip from a friend. I have passed that tip onto others. I actually used this on a guy friend's head. He was like, "Sure, why not." Within a week, he had fuzz in the formerly shiny forehead areas. My friend Jenn originally got this tip because her baby was three years old, a girl, and still bald. Within a week, she had an inch of hair. She then used it and regrew the hair that had thinned terribly after her pregnancies. I think she said it is actually thicker now then before. And it's not required to continue use. Bonus, it smells nice and then goes away.
So, I is simple as making some sort of ginger tea. I got powdered ginger from the dollar store, thrifty as I am, and made it in a tea (not boiled, just to blend better with water). I think fresh ginger and ginger essential oil might also work.
Good luck and remember to look to nature. I think garlic is another alternative, but it is kinda smelly, though tasty

How much time do you have to put in on your hair ? I think I´m going bald