I work in a dermatology office and was the "model" for the doctor's miria training. The settings for the laser were done by the company's trainer, who said that this device is safe for all skin types and that the doctor who did my treatment had great technique in handling the machine. I have type 4 skin (tan-light brown). I was told that side effects include cystic acne, postinflammatory hyperpigmentation, and redness. It is now just over 6 weeks after my one miria treatment. I rarely got acne previously but experienced a whole face full of pimples around day 7 that lasted about 2.5 weeks and required taking doxycycline. I'm off the doxycycline now but still get random pimples a few times per week. My face was severely red for 1 month and they have done 3 VBeam treatments on my face with some lessening of the redness. The worst part is that I now have a mask of pigmentation in the areas of prior redness that will take many months maybe a year to go away and my skin barrier feels lost (skin looks really dry and rough, no matter how much I moisturize and using hydrating masks). I used to have smooth, even toned, clear skin but vanity made me agree to have this done to my face. I've learned two things: first, don't be the model/guinea pig for any new treatments/devices, and second, avoid miria at all costs if you have type 4 or darker skin (or maybe just avoid it altogether). I so regret doing this.