Having considered the consistency of a product,we now need to think about its packaging and means of delivery.These probably range over the following sequence of packaging,consistency and delivery action: Package Consistency Action Example pressure cans thin and watery Spray paint,hair spray bottles,cans oily Squirt washing-up liquid,oil tubes pasty Squeeze toothpaste,tomato paste tubs soft-solid like Scoop face cream, Clearly anyone interested in these areas should be thinking very carefully about rheology