Some double distilled water I picked up for only €2,50 at the pharmacy in our town.

Eau de Parfum, Eau de Cologne and Eau de Toilette all need to be diluted with distilled water as part of the formula.

So I thought, if distilled is good, double distilled should be even better being more pure than just distilled.

Gotta see if LV has one of those medical apparatus things that lets you hang the bottle upside down and have the contents be measured out without opening the tap.