Human Skin Anatomy Diagram - Epidermis, Dermis & Hypodermis Layers Explained #3320060 (License: Personal Use)

This anatomical illustration depicts a vertical cross-section of human skin, clearly demarcating the epidermis (outermost layer), dermis (middle layer containing collagen and elastin fibers), and hypodermis (subcutaneous fat layer rich in hyaluronan and water). Key structural proteins and hydrating agents-collagen for strength, elastin for elasticity, and hyaluronan for moisture retention-are explicitly labeled to emphasize their functional roles.

Used in dermatology, cosmetic science, and skincare education websites or textbooks to explain skin physiology; supports user intent for understanding aging, hydration, or ingredient efficacy in topical products.