o.k.
my girl has managed tanning salons for the last 4 years, i have tried every lotion there is and this is my conclusion... they are way overpriced! and dont offer that much of what the cute girl at the salon says they willl....
the best thing i have used is coconut oil, you shower right befor and scrub your body good, while still in the shower get some of the oil and rub it over your whole body... dont rinse it off just pat your self dry right when you get out of the shower and then hit the tanning bed.... you will be suprised at how your skin will react, it make you a deep golden brown and offer protection from too much exposure.... this is what pacific islanders have been using for years, daily they apply the oil to protect and nourish the skin... their skin cancer rate is at the bottom of the list as well! i actually do this every time i shower and it give your skin a very health look (cause it is) and helps to reduce the apperance of strech marks... make sure to buy a good brand.. Nutiva is the best imo, jungle makes a good product... dont buy the spectrum stuff it is cheap and smell like shit....
good luck