How Do I Best Treat This Reaction to a Lactic Acid Peel (Photo).

How do I best treat this reaction to a lactic acid peel (see photo). I've done about 4 lactic acid peels (55% brand:MUAC) leaving product on for 7 minutes with no problem. Last night I had to wash it off by 3 minutes. I think my mistake was I used Retin-A the night prior. I normally have no acne, smooth skin. What you see in the picture is the reaction. Redness is deeper than what can be seen in pictures. Bumps are calming, but remain red (under skin). How should I treat? Will I scar? Thanks!