Using Retin A 0.5% would I have to stop using for a few days before the lactic peel?
That has been thoroughly studied in the Dermatology literature and the answer is that Retin A speeds the healing of peels and dermabrasion if it is continued up until the peel and then STOPPED after the peel for about one week. In other words use Retin A BEFORE the peel and RESUME it one week later.