Complete and balanced food for adult cats from 1 to 7 years old — Recommended to help reduce the formation of hairballs — Can be given occasionally from 7 to 12 years old Cats often spend a large part of their day grooming themselves and can therefore swallow large quantities of hair. These ingested hairs can compact in the digestive tract, leading to the formation of hairballs which are then regurgitated or eliminated through the stool. ROYAL CANIN® Hairball Care is composed of a specific blend of dietary fiber, including psyllium (rich in mucilage) and insoluble fiber to promote healthy intestinal transit. Thus, hairs ingested daily can be eliminated through the stool rather than accumulating in the stomach before being regurgitated. ROYAL CANIN® Hairball Care contains a precise blend of nutrients high in protein (34%) and fat (15%) to ensure healthy nutrient intake. ROYAL CANIN® Hairball Care has been proven to remove twice as much excess hair from a cat's body after just 14 days of feeding.