1, black beans dyed with vinegar

This method is very simple. Black beans have the function of blackening. Here, you can soak black beans in vinegar in advance and leave them for about 24 hours. At this time, the black beans are soft and glutinous, and then they are poured into the pot to cook until they become black paste. After filtering off the residue, you can directly apply the black bean sauce to your hair and clean it directly after 2 hours.

2, drug hair dyeing method

Take 30g of powder of Radix Angelicae Dahuricae, Rhizoma Bletillae and Dalbergia, 90g of talc, 90g of Lingxiang, 90g of Kaempferol, 90g of Glycyrrhrizae Rosin and 90g of Indigo Naturalis, mix and prepare into powder, then wash your hair with rice washing water, then evenly spread the prepared powder on wet hair, and comb it slowly and evenly with a comb.

3. Plant hair dyeing method

Some plants also have the effect of dyeing black hair after mixing. For example, after mashing sour pomegranate fruit, sesame leaves and gallnut, wrap it in a small cloth and sew it, and then put it in an iron pot to boil water. When the water is cold, washing your hair can slowly dye your hair black.

4, Polygonum multiflorum dyed hair

Polygonum multiflorum Thunb is the main component of common black hair dye, so it can also be used as hair dye here.

Take 20 grams of Polygonum Multiflori Radix, 20 grams of Indigo Naturalis, 20 grams of ginger, 20 grams of Gan Song and 20 grams of Bletilla striata, mix them and make them into powder, then add 1 liter of water and boil them in an iron pot. After simmering for an hour, it can be made into a paste of hair dye, in which Bletilla striata plays a role in fixing black, so there is no need to worry about fading after a few days.

Generally, this kind of self-made black hair dye can last for about three months after adding the raw materials to fix the pigment, which is similar to the growth cycle of hair.