A closure (8) for closing the aperture (5) of a pressure driven dispensing container, said closure comprising: (a) an outer shell comprising: a substantially planar base (110) comprising a first outer main surface (110out) and a second inner main surface (110in) separated from the outer surface by the thickness of the base, said base further comprising a first dispensing aperture (10) fluidly connecting the outer surface (110out) to the inner surface (110in) and suitable for receiving a dispensing tube (1); an outer peripheral skirt (111) jutting out of the periphery of the inner surface (110in) and suitable for sealingly fixing the closure (8) to the aperture (5) of said pressure driven dispensing container; and (b) a flexible valve (9) in contact with the inner surface (110in), located within the outer peripheral skirt (111), and defining an interior passageway (210) having a first opening at one end adjacent to and in fluid communication with the first dispensing aperture (10) and having a second opening (10a) at the other end of the passageway, characterized in that, it further comprises (c) resilient means arranged and biased such as to naturally apply a compressive force to press shut and seal the second opening (10a), said compressive force being suitable to be overcome to reversibly open the valve by pressing the tip (1 a) of a hollow dispensing tube (1) through the first aperture (10) down said interior passageway (210), and out of said second opening (10a).