they are all punch lines or jingles of adverts and in this one I think it is a lady at the end she says "it works for me"
I thought it was face cream or hair dye?
I think that is the point of this line is Mis direction.
I haven't found the answer but feel the answer will turn out to be something unexpected like an airline or holiday.
I have this on my list of things to look out for and will post an answer if I discover what it is.