Darker skins have always been more susceptible to post-laser complications because the laser energy has to pass through the pigment layers.
eMatrix doesn't use laser, so the pigment layer isn't impacted the same way.
With correct settings for your skin type, eMatrix is probably the safest option for tackling your acne scars. Although we've not had any problems with post-treatment pigmentation, there is always a risk - no matter how slight that might be.
You will need a series of treatments so get results since the treatment goal is to produce new collagen and that collagen production takes place over time and over a number of actions.
Improvement levels are dependent upon how healthy your skin is, your age (younger people tend to build collagen more abundantly and faster) and at what energy levels your doctor chooses to use for your treatment. To date, no fractional resurfacing totally smooths acne scars, but the changes are enough to be well appreciated.
Pre and post procedure sun avoidance will be important, as well as following all the guidelines given to you by your doctor.
You might also consider undergoing eMatrix treatments during the winter months when you have less exposure to sun and ambient heat.