Black sludge can easily build up in the drain of the bathroom sink from mold and mildew development, as well as toothpaste and other particles you rinse down the sink and thereby allow to accumulate in the drain pipe. A moderately easy process, cleaning away the black sludge will take care of the blockage and leave your sink draining properly.
Last week, my tub decided it did not want to drain for me. I thought about going to the store to buy something to fix the clogged drain, but instead, decided to create my own solution... http://happymoneysaver.com/diy-homemade-drano-recipe/?utm_campaign=coschedule&utm_source=pinterest&utm_medium=Karrie%20%7C%20HappyMoneySaver&utm_content=DIY%20Homemade%20Drano%20Recipe
Norwex Drain Care dissolves clogs, eliminates slow drains and odors from disposals. Enzymes and microbes breakdown and digest fats, oils, greases and food waste in kitchens and hair and toiletry buildup in bathroom drains. Removes accumulation in pipes that can reduce water ﬂow and may help prevent future clogs. Free of poisons, acids, solvents or other caustic ingredients. It does not create heat or fumes and is safe for use on plastic and metal pipes.