My main use of this air duster can is to clean my electric razor each morning after use. A few seconds-long 'squirt' both above and below the cutting heads and on the drive shafts completely rids the head of all beard debris and is far better than using, for example, an old shaving brush for the purpose. With pristinely clean cutting heads I get a better shave and I am confident I will get longer use out of a set of cutters.
Also good for gently persuading cats to step down from kitchen food preparation surfaces thus reducing the spread of feline carried contagious diseases and the resultant cost to the NHS in these days of cut-backs in public spending to save the nation from bankruptcy.
So there you have it - saviour to both electric razors and the British economy - now how many products can claim that?