Unfortunately even once is too much when using products in dreads, but at least you are only 4 1/2 months in, easier to get it out. If pomade, gels, wax or anything else like those are used, even once, it causes problems down the road. Things like lint, dust, etc will attach to the dread & work its way in, can't wash it out because it is glued in. These products also trap water droplets inside the dread, causing smells, mold and just plain funk. Glad you asked here for help. The DAWN dish soap will take you a few times probably, but you will notice the difference right away. Please don't stop at one time, you want to make sure that it is all out from the center. Give yourself a treat after the second attempt and after rinsing it out in the shower, fill the tub & let yourself & dreads soak underwater for about 20 minutes. They will enjoy floating around and more of the soap & pomade will work its way out during the hair dance. Enjoy the changes along the way