Can melanin in walnut skin dye hair?

Melanin in walnut skin can dye hair. And safe and non-toxic. Because the melanin in it is very similar to that in human hair.

Nutritional value of walnut: 86% of the fat in walnut is unsaturated fatty acid. Walnut is rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B 1, and also contains fiber, phosphorus, nicotinic acid, iron, vitamin B2 and pantothenic acid.

Extended data:

Matters needing attention in dyeing hair

1, keep your hair clean and dry before dyeing: don't do special care such as oil one week before dyeing; It is best to wash your hair the day before dyeing your hair; Do not use styling products on the day of dyeing your hair.

2. Comb your hair before dyeing your hair. When dyeing your hair, you don't need to use a comb. Please massage your head thoroughly with your fingers until the hair dye is evenly distributed on each hair.

References:

Baidu Encyclopedia-Walnut (containing melanin)