Science Diet® Hairball Control Light Adult. It's a complete and balanced, food that aids in bringing hairball problems under control, with a low calorie, low fat formula. Science Diet's innovative fibre technology helps control and avoid the formation of hairballs by moving hair through your cat's system. Science Diet® Hairball Control Light Adult is specially formulated as a complete and balanced daily nutrition for adult cats, providing essential nutrients to nourish your cat's skin and coat.