A self-employed beautician wants to claim for the cost of having eyelash extentions done on herself so that she can show potential clients what it would look like. She is unable to do this on herself so has to pay another beautician to do this for her. She wants to claim this as marketing/advertising costs.
Obviously there is a dual purpose to this as she will of course have enhanced eyelashes as she goes about her everyday non-work life. However I can see her point that a live model rather than a generic picture is a far better endorsement of what effect the extensions can have.