Copper for black hair (help ensure that your hair follicles produce the pigments (melanin) that the hair needs to retain its natural color.)

Although it’s mostly genetically driven Trusted Source, premature graying also has a dietary component.

Certain vitamins and minerals help ensure that your hair follicles produce the pigments (melanin) that the hair needs to retain its natural color.

Consider whether you’re getting enough of these nutrients in your diet. One of them is copper 

Copper

Copper deficiency can interfere with energy production throughout your body, affecting your blood cells and connective tissues.

This mineral also helps your body metabolize iron and create new blood cells. Copper plays a role in melanin production too.

Getting enough copper in your diet can ensure that these processes remain intact.

You can find it in peanuts, almonds, and lentils, as well as beef liver, crabmeat, and white mushrooms.

Information source:

https://www.healthline.com/health/beauty-skin-care/reverse-gray-hair#diet