Thus, {HEAD ~ any suitable mixing technique} or order of {TAIL ~ addition} of the components of the composition to each other can be employed 
of
Thus , { HEAD ~ any suitable mixing technique } or order of { TAIL ~ addition } of the components of the composition to each other can be employed
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH