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