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