Dark Spot Correcting Serums

Selling three lightly used dark spot correcting serums. Dermalogica Powerbright Dark Dpot serum 1 FL oz 30 ml, used a 6X, but this was too harsh on my skin. Murad Tapud Darl Spot Correcting Serum used under 20X. Stopped using because it dried out my skin. Good Molecules Discoloration Correcting Serum 2.53 fl oz used about 10x. Stopped using over the counter serums for my dark spots correcting.