advantage when opting for certain painting techniques and needs glazing over the painted work. To slow the fast-drying effect of acrylics, there are acrylic retarders that impede the rate of evaporation of water in acrylic paint. Acrylic retarders are additives generally based on glycerin or glycol. In addition to acrylic paint, it slows down the rate of evaporation of water and makes the paint workable since you can add more water if necessary. Once through with the painting, you can let the film or layer of acrylic paint set and leave to dry. In the case of oil paints, they need toxic solvents as a form of additive, such as turpentine or mineral spirits, to make the paint thin in consistency and to clean up paintbrushes or other tools. However, there are water-soluble oil paints which were developed to help artist work on them more flexibly. It must be noted though that once oil paints dry up, they tend to be brittle and yellow and will be durable throughout the decades. If you’re planning to work on or blend many colors, it is best to work with oil paints because in contrast to acrylic paints the former tends to take up more pigment. That is possible since oil paints possess linseed oil which possesses a smaller molecule than acrylic. Smaller molecules mean light interacts better with oil paint layers or films. ]