Cosmetic Peptide Powders: How to Choose, Dissolve and Use Them (GHK-Cu, Matrixyl, Argireline, SYN-AKE)
How to pick the right peptide powder, read its INCI name, dissolve it cleanly and build a simple serum you can test with a 1 g sample.
Ingredient guides
How to choose, dissolve and use cosmetic peptides and actives, written by the people who sell them.