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Epidermal Moisture Retention

Meaning

Epidermal Moisture Retention is the essential physiological capacity of the stratum corneum, the skin’s outermost layer, to effectively minimize transepidermal water loss (TEWL) and maintain optimal hydration levels within the epidermal and dermal layers. This function is crucial for preserving the integrity of the skin barrier, maintaining tissue flexibility, and ensuring overall skin health. Adequate retention is governed by the structural organization of the lipid matrix and the presence of natural moisturizing factors.