The term “water-based” refers to the binder in the paint. The binder in this case is a resin dispersed in water and not in an organic solvent. This then allows water to be added instead of the organic solvent as a “binder”. Fluo TP Hydro is formulated with 20% water instead of solvents, which reduces VOC emissions during use and limits the impact on the environment and health. It is currently the marking spray with the highest water content in its formulation on the market. If there were not the constraint of the drying time for use as a construction marker, the paint could be 100% water-based, as is the case for some decorative paint aerosols. When certain products are labelled “water-based”, this is usually due to the addition of water to the solvent-based formula (solvent-based resin and not water-based emulsion), but the quantities of water are small and do not significantly reduce the VOC content.