Tattooing is an art form that exists in many cultures around the world and has evolved over centuries. It is the practice of placing ink, dyes, and pigments under the surface of the skin by piercing the skin’s underlying layers of muscle and tissue. Tattoos can be made using a wide range of materials, such as permanent inks, temporary dyes, non-permanent markers, and metal tacks. They are a type of body adornment, and are created for reasons such as to express individual identity, to commemorate certain events, or to show off artwork. Tattoos can be made in almost any design imaginable. They vary from very simple symbols to complex designs composed of symbols, images, and words. The meaning of a tattoo depends on the wearer and can be highly personal, symbolic, cultural, or purely decorative.