OK here is my story
first time i was sprayed absolutely no difference in skin colour at all
returned acouple of days later as was stold engineer had been to look at tanning booth. again no diff in skin colour
returned third time, engineer had been again, new solution blah-de-blah
OMG machine sprays you for 15 seconds and you have to keep eyes shut. when i opened them OMG. BIG splodges on tummy and both legs, upper and lower.
shouted of woman who was rather shocked but tried unsuccessfully to reassure me it would be fine. she did try to remove the blotches but couldn't. they were green!!!
came home, face looked like i'd been motorbike srambling on a rainy day. wiped it off but didn't wash.
the next day my 'tan' had developed. i had a fantastic real looking tan on my face, chest and arms. BUT had white tummy with big orange stain, white legs with orange stains. orange heels and ankles. the orange stains looked like i'd been paintballing naked.
luckily it was n't stripping off weather, and wet, so could wear my trainers for a week
i was so lucky that the splodges weren't on my face or arms.
if it had been done by a person and not a machine then she would have been able to see what was happening.
go very carefully BH