Generally the concentrate may be entrained in a product or introduced directly into {TAIL ~ the environment} of {HEAD ~ use} 
Generally the concentrate may be entrained in a product or introduced directly into { TAIL ~ the environment } of { HEAD ~ use }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD