Hello, 1) One formula can put many types like
Copper Peptide and
Nonapeptide-1 works and produces different results. 2) In the case of using multiple peptides no matter how many The usage rate must not exceed the limit, for example, the first formula uses
Copper Peptide can be any % under 1-3 % (do not exceed 3%) and
Nonapeptide-1 1% can be combined with the formula. 3) In the case of using a large number of peptides Not harmful to the skin *If used at the specified percentage rate Every ingredient, we have to look at the specified usage rate. like some peptides to use more than the specified percentage Let's say there is no danger. But it can't give better results than the specified %. For example, Nonapeptide usage rate 1%, using 2% may not get different results from using 1% if any mistake. I'm sorry. Thank you.