Sisley

Chrono-Peptide Night Serum Guide: CLOCK Gene Science & The $14 Matrixyl Match

BMAL1 and PER1 genes control your skin's 11pm–3am repair window. Sisley's chrono-peptide serum ($300) uses Palmitoyl Tripeptide-7 at ~0.5%. The Ordinary Matrixyl 10% delivers 10% concentration for $14.