NEEDLELESS INJECTION SYSTEM

A needleless injection system (150) for injecting a composition is disclosed, the system (150) comprising and/or designed to receive a reservoir (102) containing a pressurized gas, notably stored in gaseous and/or liquefied form, the system (150) comprising conveying ducts (306; 306a; 306b), enabling the gas to be directed, first, towards the human keratin materials in order to cool said materials by means of the cold generated by an expansion of the pressurized gas and/or towards a surface (340) configured such as to capture the cold generated by an expansion of the pressurized gas and to transmit it towards the human keratin materials in order to cool the human keratin materials, and, second, towards a mechanism (308; 309; 10; 9) for propelling the composition into the human keratin materials using the gas pressure. 一种用于注射组合物的无针注射系统(150)，该系统(150)包括和/或被设计为容纳包含加压气体的储存器(102)，该加压气体尤其是以气态和/或液化的形式存储，该系统(150)包括输送导管(306；306a；306b)，首先，该输送导管能够朝向人类角蛋白材料引导气体以便借助于通过所述加压气体的膨胀而生成的冷气来冷却所述材料，和/或朝向表面(340)引导气体，所述表面(340)被配置成捕获