Black beans are rich in melanin, and rice vinegar can enhance its coloring effect. As we all know, the closer the hair dye is to the hair root, the greater the harm to the body. The advantage of this hair dyeing method is that it does not harm the liver and kidney, and it can also dye the hair roots.

However, this kind of folk prescription dyeing is not lasting. Once you sweat, it is easy to fade, so you need to dye it frequently and use it in the season when you don't sweat much. Not suitable for people with severe scalp injury and melanoma patients.

How long can black bean vinegar dye hair?

Hair problems lie in kidney, deficiency of kidney qi, black hair, deficiency of kidney qi and rough hair. The root cause of baldness lies in genes.

Daily hair can be nourished by food supplements, such as eating foods with high melanin content such as black beans, black sesame seeds and black rice. You can also cook porridge with Polygonum multiflorum Thunb and black rice, or put some Polygonum multiflorum Thunb in the stew. This can delay the speed of hair turning white by tonifying the kidney.

In fact, black beans can not only be dyed externally, but also have a good hair blackening effect when eaten regularly.

If you eat 20 fried black beans and a spoonful of black sesame seeds every night, it will have the effect of blackening hair. For alopecia, you can take boiled black beans, 50g each time, twice a day.

If it doesn't get better after 1 month, you can eat salted black beans instead (5 grams of salt for every 500 grams of black beans). 250g of black beans, 30g of ginkgo, 0/00g of black sesame/kloc-and 0/50g of Polygonum Multiflori Radix/kloc-are ground and fried, and the four ingredients are mixed and put into a bottle, and 30g can be taken after breakfast every day.

References:

Public Health Network-How long can black bean vinegar dye hair?