Hi, I currently use Sienna X and for my clients I have my truespray machine turned right down to just under 1 turn on the gun and do 2 light coats. I use just under 50ml solution doing my tans this way and get great results for how they last andwear off. I have just have spoken to another company as I have received some samples from them and they have said to do 1 coat but have the machine turned up more and still use 50ml... Any suggestions would be greatly received. thanks