Hi, All chosen ingredients are water-soluble so they will not clog pores.
they are quite different ingredient but your formulation already have many ingredients so choosing just one from these two will not produce much different result.
*2: Do you recommend any other products which contain
Copper Peptide ?
some other ingredients that also contain
Copper Peptide s are such as
Long-Lash which is designed for lengthening the eye lash so it won't be suitable for this facial formulation.
Another question: I am interested in making a separate serum for freckles to be applied before using night serum. what would be the formula with the most simple formulation with as few ingredients as possible?
you may choose 2-3
whitening ingredients adding into any serum base.