To better understand how hair affected the temperature of the head, Lasisi and her colleagues placed three different wigs or no wig on a research manikin, called a “thermal manikin.” ...

But does rolling a bunch of needles over your head really help with thinning hair? To find out, we turned to dermatologists to answer all of our questions. Here’s what they had to say.

The look can vary, of course, but it has three signature traits: a close shave on sides and back of the head, a lot of curly fluff on top – and it looks like the tuft of hair between an alpaca's ...

The beard- and hair-trimming combs confused me at first, because they’re labeled only A, B, and C. But then I noticed the number scales on the trimmer head, which show the depth settings for ...