my hair

There are certain volumizing shampoos out there that you can buy and use, but I don't think they make too much of a difference. They possibly just make you LOOK like you have more hair, instead of making more grow. The only thing that I can suggest that makes sense to me is trying to make sure you eat a balanced diet of calories, iron, and protein - as I hear deficiencies in any of those categories cause hair loss (which you certainly want to prevent). I would also say: try not to dye it that much, too! That's about the best you can do, I'd imagine.

There isn't one magical answer to this problem. I wish there was! Some things you can try are taking biotin, making sure you have a healthy diet with plenty of protein, and keeping your hair clean, never greasy. It's too late to change your parents for better genetics. LOL (I got my thin hair from my mom.)