And do you need to use one if you regularly use a resurfacing acid, like glycolic or lactic?
I'm tempted by the Ordinary peel (the one that looks like fake blood!). I use lactic acid 10% every other night, alternating with a Vitamin C 23% serum. Would the peel as well, maybe once a week, be too much ? No particular skin concerns at the moment, and I'm not overly sensitive