Abstract: A capsule for containing and dispensing a component, intended to be housed in a flask having a dispenser connected to a dip tube. The capsule includes, a first side wall, a second bottom wall at least partially removable, which define a cavity intended to contain the component, an opening for access to the cavity delimited by an upper margin, a hole at a position adjacent and contiguous to the upper margin to allow the dip tube to reach the bottom of the flask, a first constriction or reduction in diameter and/or a second constriction located on an inner face thereof and proximate to the upper margin. Another object is a piston intended to be inserted into such a capsule.

Abstract: Object of the invention is a capsule (1) for containing and dispensing a component (C), intended to be housed in a flask having a dispenser connected to a dip tube, comprising a first side wall (11), a second bottom wall (12) at least partially removable, which define a cavity (13) intended to contain said component (C), an opening (14) for access to the cavity (13) delimited by an upper margin (140), a hole (16) at a position adjacent and contiguous to the upper margin (140) to allow the dip tube to reach the bottom of the flask, a first constriction or reduction in diameter (15) and/or a second constriction (150) located on an inner face (111) thereof and proximate to the upper margin (140) Another object is a piston (2) intended to be inserted into a capsule (1) of the said type, comprising a head (21) and a stem (22), wherein the head (21) is intended to at least partially contact a portion of the first wall (11) of the capsule (1) near its opening (14) so as to seal it, wherein the head (21) is sh