Plastic product dispenser body with moving bottom

Hollow body (1) of a dispenser (6) for a cosmetic product, typically a cosmetic product, typically with a symmetry of revolution about an axial direction (10) of the said body, comprising a sidewall (2) and a supporting bottom (3), the said sidewall (2) having an upper edge (20) typically provided with an outer thread (200), forming an opening (201), characterised in that:

• a) the said body (1) comprises a part (12), forming all or part of the said bottom (3), free to move in the axial direction under a manual axial force applied on the said part (12), due to a portion of the flexible wall (11) of the said sidewall (2) or the said bottom (3) surrounding the said moving part (12) and the thickness being chosen such that the said flexible wall is resilient in bending and forms a hinge,
• b) the said flexible wall portion (11) is an annular portion inscribed within a circle typically centred on the said axial direction (10) of the said body (1),
• c) the said body (1) is formed from a plastic material that can be subjected to the said resilient bending for the said flexible wall portion (11), such that the said stress or manual axial pressure (7) applied on the said moving part (12) pushes it into the said body (1) along an axial displacement, the said moving part (12) coming out of the said body (1) and typically moving into its original axial position as soon as the said manual pressure (7) is removed,
• d) the said axial displacement, when the said stress or manual pressure (7) is applied to the said moving part (12) and pushes it into the said body (1), is an axial distance varying from 2 mm to 10 mm.