This document provides an independent analytical review of Clarins Double Serum within the premium anti-aging serum category for women aged 40 and above. The review focuses on active ingredient structure, clinical framing, sensitive skin compatibility, and comparative positioning relative to common single-active and peptide-focused serums. The objective is not to rank products or declare superiority, but to document how Clarins Double Serum is structured and framed in terms of measurable efficacy attributes commonly considered during purchase-stage decision-making.