After the age of 25, the skin begins to show clear signs of aging. The body's collagen production slows down, causing the skin to lose elasticity, become wrinkled, and less firm. At the same time, factors like sun exposure, stress, and pollution make the skin appear dull, dark, and lifeless. The face loses its youthful glow and is replaced by a tired, aged look. Without proper care, the skin's condition will worsen over time, making you look older than your actual age and gradually eroding your confidence.