In fact, the heating system only provides {HEAD ~ heat} for {TAIL ~ the perfume} reaching the top contacting surface of the wick member 
for
In fact , the heating system only provides { HEAD ~ heat } for { TAIL ~ the perfume } reaching the top contacting surface of the wick member
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH