This remedy is regarded as one of most effective and oldest ones. The reason behind is that it contains sulphur that boosts collagen production in the tissues and helps in the re-growth of hair. Don’t let its strong smell keep you away from using it, because it goes off just after one rinse.
To try this remedy, cut a few slices of onion and squeeze out its juice (either by mashing it or grating it) and apply it on your scalp for about 10-15 minutes. Let it work its magic and then rinse it off with a mild shampoo.