You should ask someone that is going on a cruise in the very near future, And to have them ask their cabin Steward,s and or there assistant steward what brand of shampoo it is. They're the one that refills the dispenser.
We love anything assocated with crusing and traveling. We are retired U.S. Navy...and loving it, "Been there...done that"! (almost).
NCL Pride of America 12/2015
MS Carnival Glory 11/2010
MS Carnival Liberty 11/2007
MS Carnival Spirit 10/2006
MS Carnival Victory 12/2005
MS Star Princess 12/2002
MS Carnival Victory 12/2000
USS Bristol County, LST 1198, 1980-1982
USS Turner Joy, DD951, 1973-1978