Picture Polish is changing to a rounded flat polish brush.
Brush Tip : you can ‘twizz’ the rounded flat polish brush (this removes the coating on the bristles) by dipping in acetone, prior to change over.
Brush Replacement: open bottle and wipe excess polish from the brush. This next part can be messy so use paper towel or cloth however easy to do. Hold the brush in one hand and pull the cap apart with the other hand. Insert the new brush in the polish bottle, place cap on brush top and twist cap, your brush and cap will join together and be attached.