I find the best way to keep this looking fresh and then to have it fade evenly is to do this:
-apply on completely dry, exfoliated skin
-wait 24 hours before you shower then just shower and wash, don't exfoliate. However Moisturize with a regular Moistrizer after the shower.
-on your next shower, exfoliate then moisturize
Keep alternating from regular moisturizing after you shower and exfoliating on the next and your tan will keep well but then fade evenly with no weird scaly uneven tan!
If you want to up keep the tan. Follow the above schedule but after a week and 1/2 after an exfoliating shower, apply the St Tropez again.