Glow sticks are used as party accessories and entertainment tools. They give light by using a mixture of different chemicals. They do not create any sparks like ordinary light bulbs. If they are used in a proper way there will be no problem or else they may create some problems.
When people use them in night parties without using naked flame as lighting, then it will be safe, or else it causes direct combustion in the surroundings, so it becomes danger. They are very useful to people from military to police men. They are also used by a lot of people for many practical purposes.
They contain hydrogen peroxide and phenol. If the glow sticks breaks, then it is advisable to keep away this mixture from skin and prevent accidental ingestion. Chemical of the glow sticks causes skin irritation, swelling if it breaks on the skin. Sometimes, it causes vomiting and nausea.
Glow sticks should be disposed properly after use, so that they are not hazardous to the environment.
Though there are many dangers, glow sticks should be used in limit. It is better for people and environment.