"Solvent-based" refers to products that use a liquid solvent to dissolve or carry other substances, such as pigments or resins. These solvents can be organic compounds, like toluene or acetone, which help in thinning paints, varnishes, and adhesives. Solvent-based products often provide a durable finish and are commonly used in industrial applications. However, solvent-based products can emit volatile organic compounds (VOCs), which may contribute to air pollution and health issues. As a result, many manufacturers are developing alternatives, such as water-based products, which use water as the primary solvent and tend to have lower environmental impact.