The method 1, wherein any variability within a delivered concentration of the functional agent over {HEAD ~ the life} of {TAIL ~ the shaped composition} is not more than ± about 50% 
The method 1 , wherein any variability within a delivered concentration of the functional agent over { HEAD ~ the life } of { TAIL ~ the shaped composition } is not more than ± about 50 %
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH