A surprising number of testers revealed a dirty secret: stripping down when coloring to avoid staining clothes. If that's not your style, wear an old button_front shirt or robe that way, you won't have to lift anything over your head when it's time to rinse. You can also lay down garbage bags instead of covering surfaces with towels or sheets, which can soak through and need washing. Keep your chapstick handy : There's nothing worse than ending up with stripes of color on your forehead. Rather than using a goopy salve to protect skin from dye, glide a clear solid lip balm along your hairline, Hill says: "Its small size makes for concise application."
Touch up your roots and only your roots. "I've seen so many clients who come in because they touched up their roots but accidentally dyed their ends, too," says Ionato. "The ends of your hair are more porous, so they suck up color very quickly." So quickly, in fact, that the runoff from rinsing out your roots can stain them. To avoid this, apply conditioner to your ends right before you rinse out the color at the top of your head. Or you could try this quick tip: Mix about one teaspoon of cornstarch into the dye to prevent it from dripping down through the rest of your hair.