Are there any possible negative effects of multiple sessions of Excel V laser to reduce global redness?

I have struggled with rosacea and redness my entire life. I would like to know any possible negative effects of multiple sessions of Excel V laser to reduce global redness? I've had a horrible experience with a laser before that was used to remove veins on my nostril but left me with a laser burn and now a pigmented, divot scar... so I am extremely apprehensive to have more laser work done but I'm anxious to reduce my redness and raise my confidence!