A tattoo is a form of body modification in which ink, dyes, or pigments are inserted into the dermis layer of the skin to create a design or picture that becomes a permanent part of the body. Tattoos can be done using various techniques, including traditional hand-poked, electric machines, or modern techniques such as microblading. Tattoos are often used for self-expression or cultural traditions and can have personal, social, or religious significance. It is important to choose a reputable tattoo artist and take proper care of the tattoo after it has been done to ensure it heals well and looks its best over time.