Wow, I've never heard of onion juice to battle hair thinning before. This sounds so simple, I might just try it! Been experiencing alarming hair fall recently, and it's starting to worry me. I've also just started using a "medicated" soap with sulfur and zinc oxide (yes, soap, but it can be used to "shampoo" the hair as well, says so on the box). So far it's relieved my itching and oiliness, but I still have hair fall.