Dual-chamber pump

The dual-chamber pump is designed to enable consumers to custom-create their own personal care product formulas by simply turning a dial. The patented system features two separate chambers, each of which holds a different formula; for instance, a skin care product with a lotion and a serum, or a cosmetic product with two different shades. As the dial-type dispenser head is turned, an actuating disc activates the pump pistons at different angles. The "mix" of the two different formulas from their respective chambers is delivered based on the setting of the user's choice.