In most cases, blotchy or uneven fading of a spray tan is typically because you are not following steps one through four above, and with a little bit of effort, you'll never run into the issue of uneven fading or blotchy patches in your spray tan.

Why does my spray tan look blotchy?

1. Uneven Fade/Patchy Skin: ... When your skin dries faster than it normally would, patches and discolorations develop in your spray tan. This can also occur if you sprayed over an existing/old tan without properly exfoliating beforehand.

Is a spray tan supposed to look spotty?

This will mostly come off with your first shower, but if they get lodged deep enough, it may not. The DHA in the spray tan can get stuck in the pores, and develop longer and faster than the rest, giving a lasting appearance of spots or freckles.