I have worked with the Profractional laser for quite some time, and have kept up with innovative uses across the country. In my office, my skin care nurses provide superficial depth treatments to 300 microns, and I perform those that go deeper.
Acne scarring is difficult, because it involves deep dermal elements. Multiple users, including myself, have been increasing the depth of Profxnl treatments to remodel the scarring. Empiric evidence have suggested at least 500 microns, and even up to 700 microns in thicker skin regions like the cheek or chin, in order to be effective. Temple skin is treated a bit less aggressively. I still counsel patients that two to three treatments must be expected. With those treatment parameters, the results have been impressive, even after prior skin resurfacing like C02 or conventional erbium. We also pretreat the skin with a 20 micron microlaser peel just before the profxnl treatment in order to improve the standardization of depth, and minimize the profxnl pattern while healing. Density setting is always 11 %, and coag is usually 1.
I don't feel it's appropriate for an aethetician to use the laser in this range. Find a physician in one of the core disciplines of derm, facial plastics, plastics, or oculoplastic surgery to perform this treatment.
Bleaching cream is recommended, and in my practice with your skin type would be deemed imperative.