You can dye your hair back to a color resembling your natural but once you have dyed your hair you cannot reverse the process. Apply the dye to your hair.
Pastel Hair Care Tips Maintain Color Longer https://www.refinery29.com/en-us/pastel-hair-maintenance-tips
Hair Color And Upkeep https://www.northernvirginiamag.com/style/beauty/2017/12/22/tips-on-hair-color-and-upkeep/
Lineart Tips Theivrgrouporg 2019 https://theivrgroup.org/image/coloring-the-tips-of-your-hair/244570.html