The tan should last anywhere from 4-9+ days. The longevity is going to vary from person to person. It will depend on the clients hormones, skin PH and how well they follow pre tan prep and post tan care. It will also depend on their level of activity ( sports etc) and how well they take care of the tan.
For best results it is recommended that you use our GLOWCARE aftercare products as they were formulated specifically to work the best with a sunless tan. A spray tan is affecting the outer layer of the skin so anything that the client does that will exfoliate will result in a quicker fading.