I'm a skeptic about all things growth aid related but I'm not above admitting being wrong.
Come one, come all: Users of Holy Ghost Grease (Lenzi's Request), Frenchee's, Surge, MTG, sulfur powder, Monistat, OCT/MT, Listerine, Cayenne Pepper, Ghee, Seaweed, Okra, Boundless Tresses, Nu Gro, Gro-Aut, Castor Oil, Wild Growth Oil, MoeGro oil, High Protein Diet, Vitamin Cocktails (hair growth vitamins or taking specific vitamins for the sole purpose of hair growth),Reflexology, Gelatin for growth, Patience Hair Oil, Avocado Oil, Snake Oil, BeeMine Hair Growth Serum, Ayurvedic products, Scritching, etc.
If I missed anything, I'm sorry. These are just the ones that got my attention over the last few years.