I was lurking by the checkout in the local Superdrug a couple of days ago, waiting with infinite patience as my wife was browsing the shelves. There were several baskets of Wipes of various descriptions, including one where the packs were labelled " Hayfever Wipes". Wondering what magic ingredients they contained I picked up one to read the label only to notice that they were identical to the others with the blurb saying that the action of wiping them around your eyes and nose would remove pollen from your face.
I know that library, it is a tedious one. Now try read general face creams, moisurisers, revitalisers, neck cream, ear cream, nose cream, hand cream, foot cream and all the other wonder creams and you'll make a similar discovery. Ditto for household cleaning spray. Hob spray, shower spray, inside cupboard spray, outside cupboard spary, stainless steel spray, etc etc etc.