Glitter is a type of decorative material that consists of small, reflective particles that are often used to add sparkle and shine to various surfaces. The term can also refer to any object or substance that sparkles or glitters due to its reflection of light. Glitter is commonly made from plastic, but it can also be created using other materials such as metal, glass, or even paper. It comes in a variety of colors and sizes, making it suitable for use in various applications including art projects, crafts, fashion designs, and celebrations like weddings, birthdays, and New Year's Eve parties.