My Grandfather taught me to drink apple cider vinegar and honey in water or apple juice daily when I was a young lad. I am now 77 years old and only no grey hair to speak of.
Apple Cider Vinegar in Apple Juice
I have a cousin who is 96 years young. Since she was a young girl she has drank a mixture of apple juice, ACV and honey every day, once a day (about a cup). Her hair is a light brown - NO GRAY AT ALL!! It was always a medium brown until she turned 90! She told me years ago to drink this and I didn't - I wish I had listened!!