These products will remove a tan fast from the face unfortunately, They are designed to keep the skin free of dead skin cells, excess oil to keep break outs to a minimum.
If you are using any products that are prescribed by a dermatologist or doctor then its VERY important to let your artist know this beforehand. They can lead to a spotty or splotchy tan on your face and chest area. When using these products of course they will get on your hands and remove the tan from there as well. :/
For Brides talk to your doctor about going off the Retin-A before your wedding and getting a sunless tan 2-3 weeks before hand is the best as the medication take awhile to get out of your system especially if you have been on it for awhile.
One more thing for those of you with large pores on your face, chest and neck area...its a good idea to have your face sprayed lighter or with a clear solution so you do not get "dirty pores" once the solution is done processing it will look like you have blackheads. NOT a pretty thing!