With my Flo One IPL machine, I usually treat 6 sessions for a client. If they buy 6 in bulk, I give them a 30% discount. In some cases for treating slightly darker skin (which you have to use less power for), I need to do 8 sessions.
Out of goodwill, I rarely charge for the extra sessions if they have already paid for a course of six, this keeps the customer happy and treatments on my machine don't take me long anyway. What machine are you using may I ask?
Disclaimer: I wouldn't recommend treating darker skin on an IPL unless you're 100% confident that know what you're doing or your machine is designed for it like an Nd:YAG machine or something.
I hope this helps!
