How are glowsticks made?

Glowsticks are made by enclosing a mixture of chemicals in a plastic or glass tube. The key components include a hydrogen peroxide solution, a phenyl oxalate ester, and a fluorescent dye. When the glowstick is bent, the inner glass ampoule breaks, allowing the hydrogen peroxide to react with the phenyl oxalate ester, producing light through a chemical reaction known as chemiluminescence. The fluorescent dye absorbs this light and emits it at a visible wavelength, creating the glow effect.