hello
Please explain more Herbal hair dye or not? If yes
1. Color from herbs There must be a helper to make the color stick on the hair. Should use a group of metal salts such as Ferrous Sulfate in the formula. at the same rate as the color powder
2. Base of dye cream There must be a helper to bring into the hair such as Ethoxydiglycol.
3. Silver Nitrate is an ingredient that is no longer used. due to safety concerns
4. The period of dyeing the hair to stick with herbs will take much longer than chemicals. The use must be fermented on the hair.