{HEAD ~ The pigment} is added to {TAIL ~ the reaction mixture}, preferably in the form of an aqueous surfactant solution, before completion of the reaction so as to become entrapped in a matrix formed by the magnesium stearate and magnesium oxide components of the reaction product composition 
is added to
{ HEAD ~ The pigment } is added to { TAIL ~ the reaction mixture } , preferably in the form of an aqueous surfactant solution , before completion of the reaction so as to become entrapped in a matrix formed by the magnesium stearate and magnesium oxide components of the reaction product composition
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH