HealthyCoat For Cats Natural Hairball Relief formula is rich in omega-3 and omega-6 essential fatty acids that all animal diets require for maintenance, growth, and prime performance. Pets supplemented with HealthyCoat have shown a restoration of health as well as reductions in shedding, hairballs, overeating, and hot spots. Supplementing with this formula can reduce already-present flea dermatitis and dry, flaky skin.