Camel artistsâ acrylic colors are soft creamy and are a golden mean between water colors and oil colors. They can be used directly from the tube or mixed with acrylic medium or with water. Relief texture can be obtained by application of thick paint with palette knife and large areas can be built up without fear of cracking. They adhere to a great variety of surface like canvas wood and earthenware. Pack includes 18 tubes of acrylic colors 20ml each along with gel medium tube of 20ml and acrylic retarder medium tube of 20ml. Retarder medium is used to slow the drying time of acrylic colors thereby allowing better mixing options for smooth blending effects of colors. Gel medium helps to thicken the acrylic colors thereby retaining brush strokes.