It’s Science Friday (okay, it’s actually Saturday now, but I had this uploaded at 23:10 last night after trying to get it to go live all day) and today’s video explains how protein filler, one of the latest “miracle products” works, and whether claims that it “repairs” the hair are exaggerated. Be prepared to see a *real* diagram (not those shitty hair advert ones) of what hair looks like, as well as a visual of the molecular formula of keratin, the molecule hair is made of… exciting!!

Enjoy.