There we go, we have pin pointed the problem, She was naked
when clients go naked for a spray tan, 99% of the time we get the feed back that they don't think they are dark enough, this is because they don't have any white bits to compare too,
all my clients that want a naked spray tan get this explained to them and i use a small love heart sticker (about the size of 2p) i place this on their hip or buttock or where ever they would prefer then i spray them, just before they are going to get dressed i remove the sticker and you are left with a white heart,
this shows the clients that there is a difference with the colour and it also looks very attractive, clients love it hth