The duration for touch-up paint to dry typically ranges from 30 minutes to 24 hours, depending on the type of paint and environmental conditions. High-quality touch-up paint, often referred to as "quick-dry" or "fast-set" paint, can dry within 30 minutes to 2 hours. However, standard automotive touch-up paint may take 4 to 6 hours to dry completely. It's important to note that the paint may feel dry to the touch after a shorter period, but it may not be fully cured until the specified time has elapsed. The curing process ensures that the paint is durable and resistant to environmental factors like UV rays and temperature changes. For instance, according to a study by the Society of Automotive Engineers (SAE), the curing time for automotive touch-up paint can vary significantly, with some formulations requiring up to 24 hours for full curing. This duration is crucial for the paint to achieve its intended performance and longevity.