After getting a tattoo, it is strongly advised not to drink alcohol for at least 48 hours. Alcohol thins the blood, which can lead to excessive bleeding during and after the tattoo session, affecting the body's natural clotting and healing processes. Drinking alcohol also weakens the immune system, increases swelling, dehydrates the skin, and can slow down the overall healing of the tattoo. For best results and to avoid complications such as prolonged bleeding, increased risk of infection, and poor tattoo appearance, waiting at least 48 hours before consuming alcohol is recommended.