This LIQUID DISHWASHER BRUSH non-scratch bristles are safe to use on non-stick cookware and effectively removes oil and filth.To open it, turn the top section counterclockwise. Then, fill the body with soap and lock it in place by turning it clockwise. A small push of the button on top will release soap. It is quite simple to take off and change the brush head. Clean your pans, pots, dishes, sinks, stoves, cooking utensils, cast iron, countertops, and other surfaces with it every day. It keeps your hand from coming into direct contact with the detergent.