I undergone co2 fractional laser on august 12th,2016. My face was severly injured, it becomes hyper pigmented and after the continuous medication it is cured a little, but the black patch is not going completely, it is still visible. Doctors advised me not to expose with sun, if i expose to sun, my skin becomes more reddish, so i am avoiding. Is there anyway to cure my skin back to normal? Can i expose my skin in sun without sunscreen?