Using the Lunar Tides Cyan Sky hair dye is easy. First, if you want the most vibrant color, bleach your hair to a pale yellow to platinum shade. Make sure the bleaching is even. If you have dark or previously dyed hair, this step is crucial as the pre - dye hair color will impact the final result. Before applying the dye all over, do a strand test because the color in the bottle may look different on your hair. Once you're ready, apply the non - damaging, semi - permanent dye evenly to your hair. You don't need a developer for this. After application, let it sit for the recommended time. To maintain the color, use color - safe shampoos and conditioners. Avoid excessive heat styling as it can fade the color faster. Keep in mind that this is a semi - permanent dye, so the color will gradually fade over time and you may need to re - apply it for a consistent look.