Abstract: This applicator comprises a base (22) and a product applicator tongue (25) that projects from the base (22) along an axis (A-A?), said tongue (25) defining a central cavity (30). It comprises a massage element (32) disposed in the central cavity (30), with the massage (32) element and the tongue (25) defining therebetween in the cavity (30) an intermediary product retaining space (33). The massage element (32) and the tongue (25) can move in relation to one another transversally in relation to the axis (A-A?).

Abstract: This invention relates to a microfluidic evaluation system (1) for evaluating in vitro the efficacy of an antiperspirant product, comprising: a natural or artificial sweat source (3); and a microfluidic chip (5) comprising: a main flow channel for the antiperspirant product (7); and at least one secondary flow channel for the sweat (9), the or each secondary channel (9) comprising a sweat inlet that can receive sweat from the sweat source (3) and a sweat outlet through which the secondary channel (9) opens into the main channel (7), the or each secondary channel (9) having a diameter of less than 100 ?m.