A very clever concept, and it works very well.
Representing their inner thoughts, mirror images become the alter egos of the main characters. Each talks to their reflection, which answer back, expressing their inner thoughts. But maybe the reflections do more than reflect. Maybe they provide the social commentary for each person, provide confidence, or rob them of it.
When 1 of the reflections is tired of the egotistical man, and another is banished because it robs its character of his confidence, there are interesting consequences.
It's an entertaining film about a cosmetics company. A company all about covering up and making yourself into someone else. The mirror, however, reflect the true selves of the characters, goading them on to be who they really are.
The story mostly revolves around one of the characters who makes an unexpected splash in a video of ordinary people to commemorate the company's golden anniversary, rather than using glamor models, and so expressing the idea that we are all fine as we are, if not perfect. Her idea is that cosmetics should enhance who we are, not obscure it.
Do the mirror images tell the truth? Do they enhance or inhibit who we are? Would everyone be happier if they ignored, or just listened to their reflective points of views and took their advice?
What if the people and their reflections traded places, and became their mirror images?