- Origin
Synthesized; bio-identical fragments
- Format
Serum, cream
- Best time
Morning and evening
What it is
Peptides are short chains of amino acids — the building blocks of proteins. In skincare, specific peptide sequences are used as signal molecules: small enough to penetrate, structured to mimic fragments of collagen, elastin, or growth factors.
How it works
Topical peptides signal fibroblasts to upregulate collagen and elastin synthesis, support barrier proteins, or modulate neuromuscular signalling at the skin surface.
The protocol
Apply to clean skin morning and evening, before heavier creams. Pair with retinol cautiously — alternate nights.
Sourcing
Look for named peptide complexes (e.g. Matrixyl, Argireline, copper peptides) at disclosed concentrations.
Honest caution
Generally well tolerated. Patch test if reactive skin.
What it supports
- Collagen signalling — Cues fibroblasts to upregulate matrix synthesis.
- Firmness — Supports the dermal scaffolding over months.
