My Wife has been using this stuff for a while, and it's about 10x as powerful as any hair, skin, nails or prenatal vitamin. Her hair is getting thicker, and when she went in to get her hair done, her stylist commented on all the new "baby hairs" that are growing. 5/5 would absolutely recommend. As for dosing, 0.5mL daily, with an insulin pin. Also, a smooth, painless injection.