Being a violet base and 14% DHA, Crossing the Line is our darkest solution. It holds up very well under unforgiving, harsh lighting. Pageants, cheer, modeling and acting clients will prefer this solution. It is a great solution to have on hand to mix with. Make special mixes for your clients that require a little extra care. This tan has moisturizers and anti-aging added in. It will last approximately two weeks and the fade is amazing. You can always count on this solution. If you ever have an emergency bride situation you can spray her and in two hours she will have a nice color. It will not be a dark tan but a beautiful glow for your bride. If you have a cheer team that needs a dark solution that holds up under so many things this will do it for you. Leave this solution on according to a clients skin tone. The more color, either from the sun or natural, the longer you can wear this solution. Those with color can wear it overnight. Your fair clients will have a great tan at 4 to 5 hours. This tan will be fully developed when you rinse. Spray, rinse, moisturize and go! No need to wait to develop after rinse.