12 Hairstylists Reveal Their Favorite Products For Treating Thinning Hair

"A new client started using the Harklinikken Liquid Hair Growth Extract ($88) and saw instant results. It's a serum you put on your scalp before bed and I can't begin to grasp all the science that it goes into it, but I do know it's amazing and works. I believe you need to consult someone (either online or if getting from an office). I want to try this out myself!" — Buckett