A Fresh Coat With a Hidden Cost—The Microplastics We're Adding with Every Brushstroke

Who would think that a freshly painted wall, so smooth and glossy, could hide such a serious problem? Paint is one of the finishing touches that brings beauty and protection to both indoor and outdoor spaces. But beneath this layer of color, there’s an invisible coat that, silently, accumulates in our ecosystems and even in our bodies. Recent research from Switzerland identifies construction paint as one of the largest sources of microplastic pollution in oceans, rivers, and other environments. These microplastics, less than 5 mm in size, enter ecosystems through weathering, accumulating in marine and terrestrial animal bodies — and ultimately, in humans. Although the long-term effects on human health are still under study, evidence so far indicates that continuous exposure may contribute to various physical and metabolic health issues. Yet, sustainable alternatives are emerging, offering a way to create healthier spaces while minimizing environmental impact.