Birthday candles are small, cylindrical objects made of wax that are used to celebrate birthdays. They are typically placed on top of a birthday cake and lit before the birthday person makes a wish and blows them out. The number of candles usually corresponds to the age of the person celebrating their birthday. These candles come in various colors, shapes, and sizes, often decorated to match the theme of the party. Some candles are designed to relight after being blown out, adding an element of fun to the celebration. Birthday candles are a traditional part of birthday festivities in many cultures around the world.