Peptides, a universally loved hero ingredient, aren’t just a buzzword: they’re one of the most scientifically backed and multifunctional ingredients in skincare. The building blocks of proteins like collagen, elastin, and keratin, peptides bind to cells and send messages to do things like increase collagen production, relax facial muscles, support skin repair and slow collagen breakdown. Below we break down different types of peptides and the function of each.
| Peptide category & function | Example | Key ingredients |
|---|---|---|
| Signal peptides send signals to cells in the skin, telling them to produce more collagen. | The Ordinary Multi-Peptide + HA Serum | Contains multiple signal (Palmitoyl Pentapeptide-4) and neurotransmitter inhibiting (Acetyl Hexapeptide-8) peptides. |
| Neurotransmitter inhibitor peptides inhibit facial muscle function, reducing the appearance of expression wrinkles. | Rhode Peptide Glazing Fluid | Contains the neurotransmitter inhibitor Acetyl Hexapeptide-8. |
| Carrier peptides carry essential trace elements like copper directly to skin cells which aids in cell regeneration and healing. | Biossance Squalane + Copper Peptide Rapid Plumping Serum | Contains Copper Tripeptide-1 and Copper PCA, a powerful Vitamin C alternative. |
| Enzyme inhibitor peptides slow the process by which enzymes break down proteins such as collagen and elastin. | Medik8 Peptide Serum | Contains every category of peptide including enzyme inhibiting Carnosine, a dipeptide. |
A deeper understanding of how skincare ingredients work within the body allows for smarter, more intentional choices. True to skinimalism, embracing multifunctional, synergistic products delivers visible results without excess.