Backed by more than a decade of Purina research, LiveClearTM is great-tasting, outstanding nutrition shown to reduce the allergens in cat hair and dander by an average of 47%, with results beginning in the third week of daily feeding.

https://www.purina.com/pro-plan/cats/liveclear-cat-allergen-reducing-food

Click on the link below for Purina Pro Plan LiveClear Customer Reviews and Testimonials

https://www.purina.com/pro-plan/reviews/liveclear-cat-allergen-reducing-food