Hello
Copper Peptide can be combined with all 4 ingredients as requested by members. But the key requirements for use are: 1. The pH of the formula must be in the range of 4.5-7.4 if higher. or below the age of
Copper Peptide will shorten 2. Do not heat. in the mixing process It must be mixed with the formula at the last step. Avoid heat. Packaging for the finished formula must be opaque to prevent UV light that can accelerate Peptide deterioration faster. The limitation of all types of Peptide is faster deterioration. when in hot weather which is inevitable for finished cosmetics Although most manufacturers require the shelf life of finished products containing peptide in formulations to be up to 2 years, the reality It is very unlikely that after 12 months the peptide in the product will still be in good condition.