This is a 'pro' laser paper but shows that newer research into these devices (that should have been done long before they went on the market) shows that LOWER
microbeam energy can effectively affect the same 'positive' changes as higher beam thus reducing the deeper heat put to patient's faces. This is a VERY recent study.
British Journal of Dermatology
Volume 163, Issue 4, pages 757–768, October 2010
Conclusions Nonablative fractionated laser resurfacing induces a well-organized wound-healing response that leads to substantial dermal remodelling and collagen induction. Surprisingly, only minimal differences were observed between lower and higher microbeam energy settings. These data suggest that lower microbeam energy/higher microbeam density treatment parameters, which are generally better tolerated by patients, may yield dermal changes similar to those that result from higher microbeam energy/lower microbeam density treatment parameters.