Underhair. Not to be mistaken with underwear, but underhair. It is the hair located near the back of your head and underneath your hair. Typically the softest hair on your head, but some are better than others. Some just makes you want to run your fingers through it. So if you ever hear Dave or I say “Oh, she looks like she has great underhair”, we are not saying anything perverse, we are just referring to their hair. So, it’s a compliment.