The Tan Prep has a face smoothing formulation with salicylic acid (it basically acts like a primer), and the Gradual Face Tan is the actual pod that allows you to build the natural looking golden glow. Both pods products are used in conjunction with the Temptu AIRbrush Makeup System and do take some practice to master.
The brand also launched a Bronzer ($35) that can be applied on top of the self-tanner for an immediate bronzed effect (versus one that builds over time). The three products are sold separatly, but if you buy them together you can save $35 with the TEMPTU Summer Skin 3-Step AIR pod Tanning Collection
o EXFOLIATE: Always begin the self-tanning process with thorough exfoliation to remove dead skin cells and unclog pores.
o GO EVEN: You want to make sure you get even coverage, so begin with a single layer so that you can build tone, layer for darker, deeper color.
o OUTER EDGES & HIGHPOINTS: Move in a circular motion around the outer edge of your face working inward. Follow with a light, even sweep across the center of the face in the areas that the sun would hit naturally. You can take that beyond the face to your shoulders and decolletage for added color.
o INSTANT BRONZE: Apply Tempty Air pod Bronzer directly over Gradual Tanner to add immediate sun kissed and bronze effects. The airbrush application will not affect the self-tanner, and will compliment the self tan with a light shimmer and golden color.