Hello. Interested in using Copper Peptide in conjunction with วิตามินซี have questions, so I'd like to see some advice. 1. Cooper peptide serum formula if using - น้ำกลั่น 99% - Hyaluronic Standard 0.5% + Hyaluronic Nano 0.5% - Copper Peptide 3%. - Phenoxyethanol 0.5%. **Want to know if this formula...
