Smuggling booze is somewhat of an art. There are many different tactics and strategies available (see this list for ideas) but this one may work wonders for Cruise lines who are notorious for prohibiting outside booze. Out of all places to sneak in booze Cruise lines are probably the most crucial. Booze prices are jacked up where you have no where else to go.
The Shampbooze is here to help though. Disguised as a normal shampoo bottle, this product changes its labels every few months and blurs them on photos to keep them under the radar. From the outside a normal shampoo bottle, on the inside, tasty goodness. Just don’t wash your hair with it.