Best Peptide Serum For Aging Skin
Peptides signal your skin to produce more collagen. We explain which peptides work best for aging skin and how to use them in your routine.

Peptide serums are among the best supporting actives for aging skin. Unlike retinol, they rarely cause irritation. Unlike moisturizers, they actively signal collagen production.
Look for palmitoyl tripeptide-5 (collagen stimulation), acetyl hexapeptide-3 / Argireline (expression line reduction), and Matrixyl 3000 (wrinkle depth improvement). Multiple peptides in one formula provide broader signaling.
Apply peptide serum after cleansing and before moisturizer. They work in the aqueous layer of skin — apply to damp skin for best penetration. Use morning and/or night.
Peptides complement retinol perfectly: retinol increases turnover; peptides signal rebuilding. Clinical routines combining both outperform either alone.
LifeCell includes multiple peptides alongside retinol, DMAE, and hyaluronic acid — eliminating the need for a separate peptide serum in your routine.
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