Black Friday sales have been underway for some time now. With prices so low, it's only right to stock up on everything from comfy shoes to beauty essentials. If you're experiencing hair thinning, we found a Nicole Kidman-approved hair regrowth serum on sale. The lightweight product helped transform the A-lister's hair, and it's marked down for less than $50. In May 2022, the actor signed on as a hair wellness advocate and a brand investor after seeing impressive results from the Vegamour Gro Hair Serum.