Your grey hair can turn back to its natural color if you regularly consume wheatgrass. You can consume one glass of wheat grass juice daily. Also you can put wheatgrass powder to your food or smoothies.

Cut the green leaves of fresh wheatgrass into tiny pieces and put them into a blander.
First wash your hair and then apply some wheatgrass juice on the scalp of your head.
When you finish, leave it in for 5 minutes and rinse your hair thoroughly.
Source: homehealthyrecipes
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