Retainers in dreams often symbolize the need for restraint or control in one's life. They may represent feelings of being held back or a desire for stability. Seeing or using retainers might reflect concerns about personal growth, the fear of losing progress, or the desire to maintain certain relationships or aspects of oneself.

Alternatively, if the dreamer is actively adjusting or struggling with retainers, it may indicate difficulties in communication or expressing oneself. This can also signify a period of adjustment in social dynamics or the need to modify one's behavior to fit into certain situations.

Overall, retainers in dreams can serve as reminders to find balance between freedom and restraint, and to be mindful of the structures we place in our lives to maintain harmony.