Hi, I'm new and just starting to grow out my hair after using my dog clippers on it! I can't say what works BUT from what I've read Omega fish oils are good. They are good for you anyway so it wouldn't hurt to start taking them. I haven't heard about garlic and onions on the hair! I heard that castor oil is good for the scalp to encourage growth. But for sure I would recommend fish oil and probiotics taken as supplements.