No more than half an hour.
Slow-drying self-drying paint will dry to the surface in less than half an hour, and will dry in 7 to 15 days. Fast-drying paint will dry to the surface in more than ten seconds, and will dry in 24-48 hours. The paint will be baked at room temperature. It will not dry down and needs to be baked. Generally, it will be completely dry within 5-30 minutes depending on the system conditions. However, it must be determined based on the construction environment. In particular, it must be divided into various types, including oil-based and water-based, and they dry at different speeds. The addition of oil-based hardener will also affect the drying speed of the paint.