Onion contains trace amounts of sulfur which is one of the essential nutrients in promoting hair growth. A study has shown that applying onion juice on scalp twice in a week for two months can stimulate hair growth. Ignore the smell for it can be washed away. Nothing works better than onion juice for hair.
Onion Juice for Hair Growth and Reversing Grey
Onions are more than just a healthy vegetable. They have been shown to help increase hair growth and reverse grey hair when applied to the scalp.
Onion juice has been used for hundreds of years to treat thin and graying hair.