1.the product is a product made by combining vitamin C. 2.extracted from multiple plants with specially developed active hair care elements. 3the hair will be beautiful ,endurable,thick and healthy after the product is applied . 4directions,no need to wash hair before dying. squeeze out the same amount of #1and #2 cream into the dying bowl and mix them well. then comb the mixture onto hair . stay for 20--35minutes. then wash with shampoo . 5. welcome to OEM. 50 kinds color for choice.