You should try not to exfoliate during your tan. However, if your tan becomes patchy or scaley you should exfoliate thoroughly to remove the excess colour. To avoid this situation in the first place you should thoroughly exfoliate at least twice before getting a tan, it is usually best to use a brands whole product range as it is designed to work as a package.
This is definitely the case with Unreal tanning and I have to say Unreal is the best tannng solution I've ever used! This solution is completely different to everyone else's on the market because it uses Advanced Seasonal Technology which basically means Unreal have different solutions to match the different seasons of the year! This means in the winter you will have a slightly lighter tan (which looks natural during the dark winter months) and the summer solution gives you a deeper, golden yet still natural looking glow.
My clients have said this is also their favourite brand as it dries quickly and has no smell. It also lasts for up to ten days with good maintenance and its pretty much impossible to turn anyone orange!! This is because the solution adapts to the skins natural properties so if you tan someone with an 8% that usually goes brown in the sun, they will go darker (with the 8%) compared to someone that usually just burns.
Unreal also do a great home product range, available online at http://www.unreal.me.uk
! There are some reviews of their products on Salon Geek, Review Centre and other forums - Google it!
I am never without my Unreal Fake Tan as I am absolutely addicted! Proud to be a TANOREXIC!!