GentleMax by Candela Laser Optimum Strength?

I signed up for 6 treatments for the full leg/bikini area and just had my first one that did absolutely nothing for me. My skin/hair combo is perfect - very light skin/very dark hair. I had laser hair removal on my face several yrs ago and the results are excellent - no hair. I am thinking that they did not use the correct strength on the machine. What are the parameters that they need to use on the GentleMax for best results? Thanks!

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