WHY DOES THE ACRYLIC BRUSH HARDEN AND HAVE CLUMPS?
An acrylic brush must be wiped in between each use. Once you have placed bead of acrylic mixture onto nail surface, wipe against a paper towel so that the leftover mixture never has a chance to harden in the bristles. If this does occur, dip brush in acetone to loosen and wipe onto paper towel until removed. Always clean brush before storing away.