Acrylic paint is pigment mixed with a polymer binder and is water soluble. It is a versatile paint and can be thinned with water or acrylic media extenders and gels. It can be used in a similar method as water color using layers of washes and wet on wet techniques. It can also be used in a thick impasto. There are a number of gel media that can be mixed with acrylic to give it a specific sheen or flat finish. Also available are retarders that can be used to extend the drying time so that the artist has more time to blend and mix colors on her canvas or paper. Once acrylic is dry it is permanent and can not be lifted in the same way as water color. Unlike oil paint, acrylics dry quickly, however, there are new acrylic paints on the market now that are slow drying and can be worked more like oils. Clean up is with water but it is important to clean up while the paint is still wet on your brushes and surfaces.