Focus the hair dryer on the area that is drying too slowly. You can take a box fan and place it on your window. How To Make Oil Paints Dry Faster Sara Paxton Artworks How To Make Oil Paint Drying Oil Painting You can slow the drying time of oil paint by adding more oil. How to make oil paint dry faster . Also paint is slow to dry in a cold environment so a warm room is preferable. Besides slowing the dry time humidity can result in paint drips and dust contamination. The use of alkyd mediums seems to be appropriate if that same medium is used throughout the layers of the painting. The temperature and humidity were relatively high at that time so that would likely have been another factor. As discussed earlier the oil medium you use will influence the drying time. Keep a fan on. Sylvia DSilva ArtA video explaining how to use Liquin to make oil paint dry faster. Add Japan Drier If youre painting with oil-based enamel you can speed up the drying time by adding Japan ...