Temporary Hair Color
If your hair is naturally or dyed dark, you won't have to worry too much about removing a bright, temporary color from your strands. However, those with light hair — especially bleached to a platinum hue — may run into some issues trying to get the pink and blue Harley Quinn-esque tints out of their pigtails.
This is because bleaching causes the hair's cuticle to lift, stripping the natural color proteins. However, that strenuous process makes the hair weak and porous, leaving it susceptible to staining.
"It's hard to ensure that there is no staining on bleached hair," Stewart admitted, "but what I usually tell models to do is wash their hair with a grease-cutting dish soap." Just like it aggressively cleans your plates, the soap will scour your strands. "However, it strips the hair of any color or oil, so make sure you finish with a deep conditioner," she noted. Learn more about hair masks here.