What is the red bit at the end of a match made of?

The red bit at the end of a match, known as the match head, is typically made of a mixture of chemicals including potassium chlorate, sulfur, and glass powder. This combination allows for ignition when struck against a rough surface. The red color often comes from the addition of red phosphorus or other pigments. The exact composition can vary depending on the type of match (safety matches vs. strike-anywhere matches).