Pro Plan® LiveClearTM is a revolutionary cat food shown to reduce the allergens in cat hair and dander by an average of 47% starting in the third week of daily feeding. All cats produce a common allergen, Fel d 1, in their saliva. When cats eat Pro Plan® LiveClear™, a key protein sourced from eggs binds to the Fel d 1 and neutralizes it. And when fed daily, LiveClear significantly reduces the allergens in cat hair and dander. Simply and safely.