Hair care experts, stylists and dermatologists share the best hair-thickening products. Shop Oribe, Color Wow and more.

I have used a powder and brush for four years, but this hair-building fiber matches my color and makes the thinning almost invisible," a fan said. Another happy customer wrote, "I'm not one to ...

Specifically, NeuroBionics aims to pipe what it has developed — bioelectric fibers the width of a human hair — through blood vessels in the brain using a procedure similar to a stent placement ...