Acrylic painters use different types of modeling pastes, gels and mediums for a variety of purpose. Gels and mediums are clear acrylic dispersion substances that also come in a variety of properties. One purpose of gels and mediums is to change the consistency of acrylic paints. Another use is to alter the sheen of the paint by making it gloss, satin or matte. Gels and mediums can also be used for collages, image transfers, mixed media and a lot more. Pastes are tools that artists can use to achieve a variety of effects and expressions. Pastes used in conjunction with acrylic colors broaden working properties and expand creative possibilities.