Container for dispensing preset amount of liquid content

A container for discharging content therein, comprising:

• a content case installed inside the container for storing the content;
• a cylinder being installed inside the container, comprising:
• an inlet hole formed on the top end for receiving the content from the content case;
• a first check valve being installed at the top inside the cylinder wherein the first check valve allows the content to flow into the cylinder through the inlet hole from the content case in only one direction;
• and
• a piston being installed inside the cylinder for pumping the content introduced in the cylinder wherein the piston has a hollow body and at least one hole thereon being connected to the hollow body;
• a second check valve being installed inside the container wherein the second check valve allows the content to flow to a brush being installed at the end of the container in only one direction;
• a content transporting tube being securely installed between the piston and the second check valve in a such way that the content transporting tube transports the content introduced in the cylinder before the second check valve;
• and
• a button member installed on the surface of the container, comprising a button being connected to the piston, the button being configured to move the piston upward into the cylinder to pump the content out;
• wherein when the button is pressed down by a user, the piston moves upward into the cylinder and pumps the contents introduced in the cylinder out through the piston hollow body all the way to the brush by creating a pressure to cause the second check valve to open and also force the first check valve to close;
• and
• wherein when the button is released, the piston is pulled back with an aid of a spring being installed on the content transporting tube by creating a vacuum force to cause the first valve to open and introduce a new content into the cylinder and also force the second valve to close.