Shrink Sense is a new feature in Alice: Madness Returns. After taking a dip into a pool of "Drink me potion," Alice acquires the ability to shrink at will. Shrink Sense can be activated at anytime.

When Alice is shrunken down, she can see things that were once never visible beforehand such as Cheshire Cat and insane children's graffiti that gives clues to items, or keyholes. Shrink Sense can also be used to see platforms that were previously invisible.

Also, when Alice uses the Shrink Sense, the world turns a shade of lavender, and she begins to hiccup at random intervals. When she does this, a small cluster of purple bubbles appears.