Ingredient Glossary
What is copper peptide (GHK-Cu)? What it does and how it reaches the skin
What is copper peptide (GHK-Cu), and how much of the laboratory evidence carries over to the skin? Its definition, the limits of the evidence,…
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3 articles
Ingredient Glossary
What are peptides? Signal peptides, Argireline and Matrixyl in skincare
What a peptide is, which types are used in cosmetics and where the evidence reaches its limits. How Argireline and Matrixyl 3000 work, and…
Fine Lines
How to use a peptide cream: Firm Baby Firm, Argireline and Matrixyl 3000
Peptide cream is the last layer of an evening routine. The order of application with Firm Baby Firm, morning use, how it differs from…