Do not pour gasoline on your hands or clothing. Remove the stand with fuel to a safe location before setting fire to the fireball. There is a fire risk - a fire extinguisher should be ready.
Always follow general safety
recommendations. Please note that conducting chemistry
experiments you must comply with the relevant legal procedures in
The fuel consists of many hydrocarbons, hexane is a major component of the gasoline. Hexane is combusted by reaction:
2C6H14 + 13O2 → 12CO2 + 14H2O
As you know, gasoline is a flammable liquid and fuel vapor burns very well. When we impregnate a cotton ball with gasoline, gasoline evaporates and vapors burn after ignition. Vapors are burning over the ball, and so we can keep the fireball in our hands. Of course, it's hot, but it's a very spectacular experiment!