The skin is the largest organ of the body, composed of the outer epidermis and inner dermis. The epidermis consists of layers of keratinocytes and melanocytes, while the dermis contains blood vessels, sebaceous glands, sweat glands, and nerves, bound together by elastin and collagen fibers. The skin acts as a barrier against environmental pollutants, helps perceive stimuli such as touch, heat, cold, and pain, regulates temperature, and aids in vitamin D metabolism. Factors like pollution, sun exposure, stress, poor diet, and inadequate sleep contribute to skin damage and premature aging, necessitating basic skin care.
