Miaolaoyi plants dye their hair well. Miao Laoyi's plant hair dyeing is a pure plant formula, which is safe and healthy, harmless to the body, non-toxic, non-irritating and non-allergic, and can also achieve the effect of maintenance during the hair dyeing process. Miaolaoyi plants dye their hair well. Plant hair dye refers to the use of substances extracted from plant stems and leaves to dye hair. This substance is expensive and is a pure natural plant element.