How to make a guys hair thicker? hair products!?

Maging your scalp helps hair grow faster and thicker because it stimulates blood flow, also, you can get hair growth and thickening vitamins at health stores, they can be expensive so if you arent willing to spend a lot try pre-natal vitamins from the drug store, they contain the vitamins that stimulate hair growth, but if you have a poor diet that could be the problem in itself, try eating better if that is the case, or even taking a normal multivitamin. As for styling tips, try using a tiny bit of thickening mousse and blow drying it straight up away from your scalp.