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Understanding Skin Barrier, Hydration and Repair: A Formulator's Guide

Your skin is more than a surface - it’s a self-repairing, intelligent barrier that renews itself every 28 days. This in-depth guide explores how your skin protects, hydrates, and repairs itself, and how smart formulation choices can work with - not against - this process. Learn how to support the skin barrier using humectants, emollients, and occlusives in your DIY skincare.