Is there a tried and true method for thickening hair, beyond those so-called ';illustrious'; shampoos?

I just want a thicker head of hair. I'm not LOSING any, it just isn't thick to begin with. Any pointers?Is there a tried and true method for thickening hair, beyond those so-called ';illustrious'; shampoos?
sorry, but thickness of hair is generally a matter of genetics. either you have it or you don麓t. there are lots of things you can put in your hair to make it appear thicker (usually have the word ';volumizing'; on them) but nothing is really going to make your hair thicker.