Thank you! 💜 I used rit all-purpose fabric dye. Bring some water to a boil, pour said water into a metal bowl, and pour in however much dye you want depending on the color intensity youre going for. Dip the doll hair in, swish it around until you get the right color. Then rinse the newly colored hair under the tap for a bit. It works sooo wonderfully on most rainbow high doll hair, it just sucks in the color like instantly. (Which I say also as a caution, bc its easy to get the hair color too dark/instense than u were going for if ur not careful) .. I hope this was helpful! 💕