Mix with paint to make it much thicker, better for blending, and glossier - or use as a collaging adhesive.
Basics acrylic mediums are excellent student-quality formulas - ideal when you're starting out, when you're on a budget or when you're experimenting. Find a medium to help prep your surfaces, adjust paint consistency, flow and sheen. You can change color opacity, drying time and texture, and protect your finished work.