DescriptionSD Naturals - Dental Grade Whitening Gel - 1 4 count Kit - NPN: 00000000 -- Keep your smile white with our universal refill kit: use in Spa Dent dual arch comfort fit trays, custom dental trays to whiten or as a nightly toothpaste booster to fight lifestyle stains and maintain a bright smile. PH Neutral, Silica Free, Lactose Free and Gluten Free ingredients that whiten, fight bacteria and remineralize. A must have for anyone with Orthodontics to prevent white spots at adhesion points. 24 Whitening Treatments Same Professional Strength Gel used in Dental Offices Brush on safe for use with Orthodontics Made With Natural Ingredients Tooth Friendly Xylitol Sensitivity Free and Enamel Safe Vegan Friendly Formula that's Cruelty FreeINGREDIENTSWater(Aqua), Glycerin, Urea Peroxide, Hydrogen Peroxide, Xylitol, Erythritol, Carbomer, Dipotassium Phosphate, Aloe Barbadensis Leaf Juice, Mentha Arvensis Leaf Oil, Melia Azadirachta Leaf Extract, Zinc Citrate, Calcium Lactate, Potassium Citrate, Disodium EDTA, Polysorbate 80