My doctor told me to use isotretinoin for 4 weeks before Co2 Laser scar treatment. Why is this?

If you have darker skin, I'd recommend a nonablative laser like fraxel or a fractional radiofrequency treatment like VIVA/Skinfinity/Intensif.  Isotretinoin is safe with lasers if used properly. I suggest seeing an expert. Best, Dr. Emer.

Isotretinoin is a prescription drug used to treat severe acne.  A patient should wait at least 6 months to a year before considering CO2 Laser treatments.  Your history of dark skinned individual makes you at risk for pigment issues secondary to the laser treatment.  Consider several opinions prior to undergoing this aggressive treatment and ask to see or talk with others of similar skin type to be better prepared.