Pre-Cleaner Refill Bottle is an 8 oz. Refill Pre-cleaner was designed to save money after buying the special Pre-cleaner Mist Spray bottle. Pre-cleaner will break up the buildup on the scalp and hair. Emphasis is on cleaning the mouth of the embedded hair, keeping the opening clean so that nutrients can enter and go to the follicle roots to initiate scalp stimulation, as a therapeutic process. You will notice that the Pre-Cleaner will loosen dry scalp buildup from psoriasis before your shampoo.