Hello. Looking to get fractional co2 laser (ultrapulse co2 fractional laser) done on my skin. I am a fitzpatrick 4-5 skin tone. Is this safe? I have requested the lowest possible settings (low density and low number of passes). I am also using antiviral and antibacterial before. Am I still at risk for permanent hypopigmentation/hyperpigmentation, or am i safe using this gentle approach despite being darker.