In The Sims 4: Businesses and Hobbies expansion pack, the tattooing skill has been introduced as a major skill, offering a new depth to the gameplay. While tattoos were already part of the base game, this expansion significantly enhances the system, allowing Sims to improve their tattooing abilities through practice. With this new expansion, players can also set up and manage their own tattoo parlors, adding a unique business opportunity to the game.