Bill H.345, introduced by Representative O'Brien of Tunbridge, aims to prohibit the sale, distribution, or offering for sale of glitter that contains intentionally added synthetic polymer microparticles in the state of Vermont. The bill defines "glitter" as small, reflective particles used for decoration, and specifies that "intentionally added synthetic polymer microparticles" are synthetic microplastics added by manufacturers to achieve desired characteristics. The legislation outlines the criteria for what constitutes synthetic polymer microparticles and clarifies that natural polymers resulting from non-human processes are excluded from this definition.

The prohibition on the sale of such glitter will take effect on January 1, 2028, with an exception for biodegradable, soluble, or natural glitter that does not contain synthetic polymer microparticles. Additionally, the act is set to become effective on July 1, 2025. This legislation reflects a growing concern over the environmental impact of microplastics and aims to reduce pollution associated with single-use plastics and glitter products.