I have heard the hair which grow after you shave with a razor are harder.Also the length of your facial hair is smaller than your scalp hair so,when you move your hand over it you feel the pointy tips and not the entire strand like the scalp hair. read more
Others are specific for the hair on your face. For example, some regulate the growth patterns which explains why facial hair typically can't grow as long. Others control how thick each individual hair fiber becomes, and the specific protein composition which influence strength and thickness. read more