Acne Breakout on Sun-damaged Skin

I have searched all over the internet but have not found anything that covers this. I have pretty badly sun damaged skin (which was caused by a sad attempt to sun bathe all the time and rid myself of dark marks from acne). Just recently I broke out again, pretty much for the first time since my skin was destroyed. I'm terrified that the pimples will have a hard time healing because of how damaged my skin is, and will stay there forever. Or when they do go away, healing will be so inadequate that I will have scars on every inch of my face.

I'm currently on retin-a .05 but it hasn't done anything yet. I'm taking 2 g of vitamin c per day as well as other skin supplements such as alpha lipoic acid, etc. And of course I use spf 30 every day now. Would increasing the retin a concentration to .1 help at all? What else can I do, and what should I expect in regards to the healing of my pimples? They're small, but EVERYWHERE.