2, prepare 750ml vinegar, vinegar should choose a darker color, thicker texture of vinegar, such as mature vinegar.
3. The ratio of the two is about 1: 10 or 15, that is, 1 spoon of black beans, and the amount of vinegar is equivalent to 10- 15 spoon (depending on the viscosity of vinegar). If the vinegar is thin and the water content is high, the proportion of vinegar should be increased appropriately.
4. Put the black beans and vinegar into the pot, cook the black beans with high fire, and then remove the residue to get the juice.
5, and then boil this medicine juice into a sticky state. Every time you dye your hair, you can apply a proper amount of this medicine juice to your hair for half an hour and then wash it clean.