The largest organ in the human body is the skin. The skin serves multiple essential functions, including protection against environmental hazards, regulation of body temperature, and sensation. It acts as a barrier against pathogens and helps to maintain fluid balance. The skin consists of three main layers: the epidermis, dermis, and subcutaneous tissue. Skin health is vital for overall well-being, and various factors, including diet, hydration, and sun exposure, can significantly impact its condition and appearance.