Simple Solutions acrylic medium, firm, #3, 4-ounces. Sold individually.
Item Number: H20-2777BS
Firm solution #3, non-toxic.
Recommended for use on porous surfaces such as polymer clay, wood and terra cotta. Water soluble and ready to mix with pigments. May also be used as an extender for other acrylic-based paints. Some surfaces may require a spray fixative.
For full strength, mix one part pigment with two parts acrylic medium. Use more medium to create a soft, sheer look. Colors dry completely within 72 hours.