A device for withdrawing and applying a fluid product comprising: - a base piece mounted to a fluid product tank , the base piece comprising a dip tube defining a tube inner volume Vtp and a cup (21; 21'; 21") at the bottom of which an injection hole is formed, being connected to the dip tube , the cup being provided with a piston (27; 27') forming a piston lip having a piston diameter Dp, and - a removable member removably mounted to the base piece , the removable member comprising a gripping tab , a tubing (33'; 33"; 33) capable of sealingly sliding against the piston lip over a sealed axial stroke and an applicator capable of holding a fluid product dose from the dip tube by a suction generated by sealingly sliding the tubing (33; 33"; 33) against the piston lip over said sealed axial stroke, the applicator comprising a withdrawal and application space defining a withdrawal volume Vp, this withdrawal and application space being formed in the tubing (33; 33"; 33), the fluid product being injected into this withdrawal and application space through the dip tube and the injection hole , wherein the sealed axial stroke Cae represents an axial sliding height Hac which is determined so that this height Hac correlated with the piston diameter Dp of the piston lip defines a suction volume Va which is greater than the tube inner volume Vtp, so that Hac meets the formula: Va = Hac . π . Dp 2 / 4 > Vtp hence : Hac > 4 Vtp / π . Dp 2 characterised in that the suction volume Va is lower than the sum of the tube inner volume Vtp and of the withdrawal volume Vp, so that Hac further meets the formula: Hac < 4 Vtp + Vp / π . Dp 2 - a base piece mounted to a fluid product tank , the base piece comprising a dip tube defining a tube inner volume Vtp and a cup (21; 21'; 21") at the bottom of which an injection hole is formed, being connected to the dip tube , the cup being provided with a piston (27; 27') forming a piston lip having a piston diameter Dp, and - a removable member removably mounted to the base piece , the removable member comprising a gripping tab , a tubing (33'; 33"; 33) capable of sealingly sliding against the piston lip over a sealed axial stroke and an applicator capable of holding a fluid product dose from the dip tube by a suction generated by sealingly sliding the tubing (33; 33"; 33) against the piston lip over said sealed axial stroke, the applicator comprising a withdrawal and application space defining a withdrawal volume Vp, this withdrawal and application space being formed in the tubing (33; 33"; 33), the fluid product being injected into this withdrawal and application space through the dip tube and the injection hole , wherein the sealed axial stroke Cae represents an axial sliding height Hac which is determined so that this height Hac correlated with the piston diameter Dp of the piston lip defines a suction volume Va which is greater than the tube inner volume Vtp, so that Hac meets the formula: Va = Hac . π . Dp 2 / 4 > Vtp hence : Hac > 4 Vtp / π . Dp 2 characterised in that the suction volume Va is lower than the sum of the tube inner volume Vtp and of the withdrawal volume Vp, so that Hac further meets the formula: Hac < 4 Vtp + Vp / π . Dp 2 <EOS>