For the last few weeks I've been seeing this commercial for Astra Zeneca's Symbicort product. The commercial bothered me so much that I couldn't even tell you what it was for the first few times I saw it. Apparently, the stylistic convention of the silhouetted main character/spokesperson was intentional (according to blind.com) instead of a mistake.
I thought for sure that the initial shoot went badly and putting the subject in shadow was the way of covering up a mistake (or a really miscast actress). Or, perhaps it was a poor way of making this spot available for an international market (since you can't read her lips, dubbing won't be an issue). That this is not an error in production simply means that it's an error in judgment by the EvoLogue Agency.