Soft bristles are a type of fiber in a brush designed for gentle cleaning of surfaces without the risk of scratching. Thanks to their fineness, they are suitable for washing sensitive materials such as painted car bodies, windows, outdoor blinds, or garden furniture. They allow for the mechanical removal of stuck-on dirt that a water stream alone cannot wash away, without damaging the cleaned surface. Compared to hard bristles, they are gentler but may not be as effective on very stubborn and dried dirt on rough materials.