List Of How Long To Let Dye Sit On Hair Ideas. You’ll want to find a shade within two shades of your natural hair color or a shade darker than the last color. If you are using a permanent hair dye, it is important to leave the dye in.

If you are using a permanent hair dye, it is important to leave the dye in. However, this can vary depending on the type of dye and. You’ll want to find a shade within two shades of your natural hair color or a shade darker than the last color.