Skincare Academy · ingredients
Peptides in skincare: what can they actually do?
Understand peptides, the evidence limits and why formulas differ.
Not all peptides do the same job
A peptide is a short chain of amino acids, but cosmetic peptides differ in structure and intended function. Some are used for skin conditioning while others are studied for appearance-related effects. The word 'peptide' alone is not a performance specification.
A proposed mechanism is not an outcome
Acetyl hexapeptide-8 is a cosmetic peptide marketed for the appearance of expression lines. A proposed mechanism or laboratory observation does not establish clinical efficacy for every formula, and it should not be described as equivalent to a medical procedure such as botulinum toxin treatment.
Read the INCI, not the headline
Ask for the precise INCI name, product vehicle, directions, measured outcome and test duration. Products with a common 'peptide' claim can differ markedly in composition and tolerability.
Make a useful decision
For comfort and hydration, start with a suitable moisturizer and stable routine. Do not stack several peptide serums without a defined goal; compare measurable results rather than marketing language.
