I had mild rosacea and had Halo at setting 275/1550 a month ago. I have holes all over my face. Will they go away?

Halo is part ablative so there are supposed to be tiny holes the first couple of days.  When it heals, it will feel like fine sand paper. This is will  flake off on its own. If you still have concerns about the treatment then follow up with your doctor. 

I would assume that you are within the five-seven day healing period.  It is normal to see what may appear to be holes beginning on the second day after treatment.  These are known as "mends" -- microscopic epithelial necrotic debris.  This is the damaged tissue being expelled from  deep within your tissue.   New collagen and elastin is being formed beneath the skin surface.  The actual skin surface heals very quickly after treatment.

 We have not seen what you're describing  in any of the hundreds and hundreds of Halo laser treatments we have performed for the past two years. Tiny pinpoint marks are typical for the first week or so. But after that, the skin is typically smoother, more refreshed, and more evenly colored with less vascularity. We have not seen any indentions.  If you have not done so yet ,I encourage you to see your provider. Some places only have a Halo laser and nothing else. If your provider has other types of lasers such as Sciton's MicroLaser peel and/ or some type of laser resurfacing, and other vascular lasers, your condition should be able to be resolved or greatly improved.