100% of what?
I know of no peel that is used at 100%. I hope this was not one of those internet peels. Dark skin must be peeled with caution. Safe peels for darker skin (when done by an experienced dermatologist or plastic surgeon) include 20-30% SA, 10 % TCA, 30-70% glycolic, Jessners. Please see someone soon to deal with possible post-inflammatory pigment changes, scars and keloids.