What kind of brushes work best when using acrylic paints?
Both natural and synthetic bristles can be used with acrylics, depending on the artist's preference. But, acrylics, being alkaline in nature, can be hard on natural hair brushes.
The brushes must be kept clean. If acrylic paint dries in a brush it is very hard to get out without using strong solvents that might damage the brush. Clean brushes promptly by washing them with warm water and mild soap when finished painting.
What is the difference between artist and student grade acrylics?
Fine artists acrylics use high quality, finely ground and milled pigments, chosen for lightfastness and clarity of color as well as mixing qualities. They also have more resin solids.
Student acrylics use pre-milled pigment dispersions, where most colors are mixed or blended rather than used pure in an acrylic binder. Pigment concentrations are lower, and fillers are used.