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Skin Barrier (Occlusive Effect) (None)

Target: None
Molecular classification: Lipid Matrix, Physical Barrier, Physiological Process

Overview

The skin barrier, primarily the stratum corneum, protects against environmental insults and prevents excessive water loss. The occlusive effect describes how substances form a film over the skin, reducing TEWL and enhancing hydration. While beneficial for conditions like dry skin and drug delivery, prolonged occlusion can impair barrier function, especially with irritants.

Other names: Stratum Corneum Barrier FunctionTransepidermal Water Loss (TEWL) ReductionSkin Hydration (Occlusion-mediated)

Mechanism of action

Physical film formation reducing transepidermal water loss (TEWL) and increasing stratum corneum hydration.

Biological functions

Hydration MaintenanceProtection from External InsultsRegulation of PermeabilityDrug Delivery Enhancement

Disease associations

Atopic DermatitisContact DermatitisDry Skin ConditionsImpaired Wound Healing

Safety considerations

Potential Barrier Disruption (prolonged occlusion)Increased Risk of Irritation (with irritants/detergents)Contact Dermatitis (predisposition under occlusion)Folliculitis

Interacting drugs

Petrolatum

4 more in the full profile.

Biomarkers

Transepidermal Water Loss (TEWL)Stratum Corneum Hydration LevelsFilaggrin ExpressionLoricrin ExpressionCeramide Levels

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