100% All-Natural 1.7oz. Start with a small amount and increase as needed. Melatonin may be used once a day about 1/2 hour before normal sleep time but every other day maybe twice a week may work just as well. THe amount of melatonin and how often varies with each person. OUr Exlcusice Liposomal Delivery System offers maximum absorption of nutrients not found in common topicals. Each 1/2 press of pump dispenses 1mg Melatonin. 100% Soy, Paraben and Fragrance Free.