These three words get used as if they mean the same thing. They don’t. Here is the actual relationship between amino acids, peptides, and proteins, and why the size difference matters for how each one works.
Peptides are everywhere, from serum labels to supplement bottles to your feed. This guide explains what they actually are, how they work in skincare and supplements, and what the evidence supports, without the hype.
Oud is the most expensive natural ingredient in perfumery. This guide covers what agarwood is, how it forms, why it costs more than gold, and how to wear it.
A named-peptide breakdown of La Prairie’s Pure Gold Revitalising Essence: the real ingredients behind the “Meno Complex” name, what the formula can support at an appearance level, and what it can’t.
A named-peptide breakdown of La Prairie’s Life Matrix cream: the real ingredients behind the “Matrix Complex” name, what they’re intended to support, and why “longevity science” marketing claims more than the formula itself does.
Product order and layering technique affect how well a skincare routine performs. Here’s the actual, defensible reasoning behind toning, layering by texture, and adjusting routines between morning and evening.
What the Beauty Magazine Covers
Here, we explain the research behind peptides and cover the skincare formulations built on that science.
How We Cover This
We break down what peptides actually are, how they work in skincare and supplements, and what published research and regulatory guidance actually support. Every claim here is limited to what the evidence backs: we describe what an ingredient may support, not what it treats or cures.
Alongside the science, we cover established luxury skincare, including formulations from houses that apply peptide research in practice. Reviews and guides in this category focus on ingredients, formulation, and what a product is actually built to do, not just the name on the box.
Where to Start
New to the topic? Start with our guide to what peptides actually are, then explore the specific categories below: skincare applications, oral supplements, and the research behind the current interest in this ingredient.
For a quick lookup of any other named peptide in this series, the Peptide Glossary has the full list in one place.