Target intelligence / Profile preview

Stratum Corneum (Hydration) (SC Hydration)

Target: SC Hydration
Molecular classification: Lipid Matrix, Natural Moisturizing Factors (NMFs), Extracellular Matrix

Overview

Stratum corneum hydration refers to the water content of the outermost layer of the epidermis, which is critical for maintaining skin barrier function, elasticity, and overall health. It is regulated by natural moisturizing factors (NMFs), intercellular lipids, and environmental factors. Dysregulation leads to dryness and skin disorders. Therapeutic interventions focus on replenishing moisture through humectants, emollients, and occlusives.

Other names: Skin Barrier HydrationEpidermal HydrationCutaneous Hydration

Mechanism of action

Humectants attract water from the dermis and/or the environment; emollients fill spaces between corneocytes and soften the skin; occlusives form a barrier to prevent water loss; keratolytics promote shedding of dead skin cells and improve hydration.

Biological functions

Barrier FunctionWater RetentionRegulation of Transepidermal Water Loss (TEWL)Skin ElasticityProtection from Environmental Stressors

Disease associations

Xerosis (Dry Skin)Eczema (Atopic Dermatitis)PsoriasisIchthyosisAge-related Skin DrynessIrritant Contact DermatitisAllergic Contact Dermatitis

Safety considerations

Irritation from certain ingredientsAllergic reactionsPotential for occlusive agents to exacerbate acneOver-exfoliation with keratolytics leading to irritationCompromised barrier function if natural moisturizing processes are disrupted

Interacting drugs

Humectants (e.g., Glycerin, Hyaluronic Acid)

3 more in the full profile.

Biomarkers

Transepidermal Water Loss (TEWL)Skin Surface Hydration (Corneometry)Natural Moisturizing Factor (NMF) levelsLipid compositionStratum Corneum pH

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