Glitter eyeshadows typically contain a combination of pigments and reflective particles, with one of the key ingredients being mica, a naturally occurring mineral with unique reflective properties. Titanium dioxide is another common ingredient that adds brightness and enhances color intensity. Synthetic fluorphlogopite is also used in some glitter eyeshadows. These products are often made of safe and non-toxic high-quality mineral ingredients, and some are vegan and cruelty-free, free from harmful chemicals such as phthalates, parabens, and nonylphenol. Some glitter eyeshadows are also infused with beneficial oils for a velvety texture. It's important to note that the use of plastic-based glitter in cosmetics can have environmental implications, and there are now more sustainable glitter options available, such as plant-based bioglitter