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Allow the spray solution to fully dry. Avoid showering and any strenuous, sweat-inducing activities for 8 hours. Take your first shower. Moisturize your skin. Avoid chlorine. Exercise in moderation. Avoid spa treatments and products. Apply self-tanner.
This process usually takes about 10-20 minutes and can be sped up with special drying machines.  After you are dry, put on your loose fitting, dark clothing and shoes.  It is best not to wear a bra or anything else that may rub and disturb the tan solution.  Some technicians and salons will help aid the drying process with a machine. Do not carry a clutch or heavy purse or backpack on your shoulders as this will cause unnecessary contact with your skin that could result in the spray tan solution smearing or rubbing off. You will want to clear your schedule for these 8 hours to be at home where you can relax in a comfortable, private environment.  Sometimes the spray tan solution will be darker before you wash it off so the technician can see where they have sprayed. If this is the case, you might not want to have to go back to work or a public place before showering. Lay a dark sheet over your couch or bed during these 8 hours to avoid any residue from getting on your furniture. Relax by watching television, reading, or another quiet activity while you wait for the spray tan to set. Avoid any activities that might cause excessive rubbing or smearing of the spray tan solution on your skin. Following 8 hours of no showering or excessive sweating, you can now take a shower carefully.  Take a warm, quick shower in order to prevent any loss of tan coloring.  When showering, do not use hot water or take unnecessarily long baths since these will cause the tan to fade more quickly. Do not exfoliate your skin excessively as this will cause the tan to fade. After showering, gently pat your skin dry. Following your shower, you should use caution and properly moisturize with lotion in order to increase the longevity of your tan.  Use a lotion that is free of fragrance to moisturize. Your spray tan salon may have a speciality spray lotion available for purchase that does not disturb your tan through friction of application. Chlorine in swimming pools will diminish the length of your tan so try to reduce pool time.  Hot tubs are particularly dangerous as the combination of hot water and chlorine is detrimental to spray tans. If choosing to exercise, it is best to wait at least two full days before taking on workouts that will involve heavy sweating.  However, be warned that sweating does cause the color of the tan to disappear faster so you may desire to moderate the intensity of your workouts. For example, you may choose to do a gentle yoga workout instead of an intense run. Some spa activities might react poorly with your spray tan and cause the color to break down. These include massages, scrubs, masks, manicures and pedicures, or microdermabrasion.  Receive any spa treatments at least 24-48 hours before a spray tan appointment if you anticipate wanting these services in the week after receiving your spray tan. Stay away from any products containing retinols or alcohol. Because certain areas of the body, such as feet or hands, might lose their coloring more quickly than others, you can extend the life of your spray tan by using a makeup sponge to apply a gradual self-tanner lotion to these problem areas.