A dispenser (10) for dispensing a mixture (6) of a first flowable material (4) and a second flowable material (5) has a container (12) having a first chamber (20) and a second chamber (30). The first chamber (20) is adapted to contain the first material (4) and the second chamber (30) is adapted to contain the second material (5). The dispenser (10) further comprises a first membrane (50a) separating the first and second chambers (20,30), and a second membrane (50b) connected to the container (12) proximate the second chamber (30). Pressure applied to the first membrane (50a) fractures the first membrane (50a) wherein the first flowable material (4) and the second flowable material (5) mix to form a mixture (6). Pressure applied to the second membrane (50b) fractures the second membrane (50b) to dispense the mixture (6).