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 soltion. 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 situration you can spray her and in two hous she will have a nice color. It will not be a dark tan but a beautiful glow for your bride.