Yes, this is an advertisement, from a 1941 magazine spread.
I won't spoil the surprise, or reveal what the "product" is, until you read the rest of the ad, here, at the blog I'm Learning to Share.
After you see the whole story of "Little Mary's Complaint," come over to the comments, where I have more to say on the subject!
Thanks to: Mark Frauenfelder at BoingBoing for posting this.