SKIN

The skin is the body's largest organ, serving as a protective barrier against external factors like pathogens, UV radiation, and physical injury. It regulates temperature, enables sensory perception, and plays a role in immune defense. The skin consists of three layers: the epidermis (outer layer), dermis (middle layer), and hypodermis (subcutaneous tissue). Common skin conditions include acne, eczema, psoriasis, and dermatitis. Proper skincare, hydration, and sun protection are essential for maintaining healthy skin.