This Pump Bottle is Made of PP. It is Acetone safe and can be used to store Nail polish removers both acetone or acetone free. It has a twist lock which can prevent accidental spillage if knocked over. Not recommdned for travelling as it is not 100% spill proof. Great for used at home or in salons. To use, unlock the lid and press the bottle to Pump out remover liquid to the surface of the bottle. Very convenient nail art tool to have.