Let me see if I get this straight: you are relying on a movie, a work of fiction that is based on another work of fiction as a source of scientific information. I woulud say this is where the confusion begins.
The harmful effects of alcohol on your skin are greatly overstated, primarily by those who wish to sell you some type of alcohol free concoction at an inflated price.
My experience tells me you are wrong
And there are good alcohol-free ASB out there that are not expensive