Peptides
Short chains of amino acids that signal skin cells to produce more collagen and elastin, firming and plumping the skin.
What Is Peptides?
Peptides are short chains of amino acids that serve as building blocks for proteins like collagen, elastin, and keratin — the structural proteins that keep skin firm, smooth, and resilient. In skincare, synthetic peptides are designed to mimic naturally occurring signaling peptides, essentially 'tricking' the skin into producing more of these essential proteins. There are several classes: signal peptides (like palmitoyl pentapeptide-4) stimulate collagen production; carrier peptides (like copper peptides) deliver trace minerals essential for enzymatic processes; and neurotransmitter-inhibiting peptides (like acetyl hexapeptide-8) relax facial muscle contractions for a temporary smoothing effect. Peptides are among the most exciting anti-aging ingredients because they target the root cause of skin aging at the molecular level.
Key Benefits
- Stimulates collagen and elastin production for firmer skin
- Reduces the appearance of fine lines and wrinkles
- Improves skin barrier function and hydration retention
- Supports wound healing and skin repair processes
- Enhances skin smoothness and texture over time
- Well-tolerated by most skin types with minimal irritation
How to Use Peptides
Apply peptide serum or moisturizer twice daily after cleansing and before heavier creams. Peptides work best in leave-on products (serums, moisturizers) rather than wash-off formulations. Consistent use for 6–12 weeks is needed to see visible firming results. Peptide concentrations vary by type; look for products where peptides appear high on the ingredient list (top 10). Copper peptides should be used separately from vitamin C as they can destabilize each other.
Pairs Well With
Pairs excellently with hyaluronic acid, niacinamide, ceramides, and vitamin C (except copper peptides). Peptide + niacinamide combos are particularly effective for barrier repair and anti-aging.
Avoid Combining With
Copper peptides should not be mixed with vitamin C — they mutually degrade each other. Avoid combining with strong AHAs or BHAs in the same step, as low pH can affect peptide stability.