Jason Nutrismile Enamel Defense Mouthwash Alcohol FREE Mouthwash. Freshen breath and nourish your smile, without harsh abrasives or irritating chemicals. Jason NutriSmile mouthwash features high potency Vitamin C Calcium Ascorbate, which strengthens tooth enamel by helping rebuild weak spots on your teeth. Grapefruit Seed and Perilla Seed Extracts help reduce tartar build-up while Aloe Vera Gel soothes gum irritation. Vegetarian.