In addition to the potential physical harm, ingesting glitter can also be harmful to the environment. Many types of glitter are made from microplastics, which are tiny pieces of plastic that can be harmful to wildlife and the ecosystem. When these particles enter the water supply, they can end up in the oceans and affect marine life.
Overall, it is best to avoid eating glitter and to use it only for crafts and decorations. If you accidentally swallow glitter, it is important to seek medical attention if you experience any adverse symptoms.