A lint roller picks off tiny traces, so dream books read it as concern with small flaws and how you look to others. It can reflect a wish to remove little things that cling.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.