I only use facial fake tan because whenever I tan naturally, the tan on my face fades quicker than the tan on my body. Ive got the fake bake 'make believe' facial gradual tan moisturiser. 1 application over night is good enough to make my face look sunkissed, and it doesnt streak at all. Fab product
After many years of photographing whiter than white gothic models I really appreciate a tanned model. It does not matter to me if the tan is fake so long as it looks good (i.e. NOT chavtastic orange) and given the long-term health risks of exposure to sunlight is perhaps preferable to tanning naturally.
I have done several shoots this year with Star_light who uses fake tan and she looks fantastic. Perhaps you should send her a PM and find out what she uses.
Retouching a model with fake tan almost always takes me longer, I was actually thinking of sticking an extra charge on when I retouch other photographers work if the model has fake tan. I probably wont but it does add time, streaky and patches is my problem with it, not the colour.