from {HEAD ~ about 1%} to {TAIL ~ about 20%} by weight of an abrasive composition comprising 
from { HEAD ~ about 1 % } to { TAIL ~ about 20 % } by weight of an abrasive composition comprising
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH