It is provided a nozzle (10) for applying a powder, particularly a pulverized hair treatment product, particularly preferred a cosmetic and/or dermatological product, comprising a cap (12) for being connected to a squeezable container for storing the powder, an outlet conduit (14) protruding from the cap (12) along an axial direction (16) for dispensing the powder through the cap (12). According to the invention a mesh (28) covering the outlet conduit (14) for retaining the powder and for pulverizing powder agglomerates is provided, wherein the mesh (28) comprises in a region covering the outlet conduit passages, and the outlet conduit (14) comprises an inner surface (22) for guiding the powder, wherein the inner surface (22) is inclined with respect to the axial direction (16) of the outlet conduit (14) by an angle α of 0.0°≤ α ≤ 15.0°, particularly 1.0°≤ α ≤ 12.5°, preferably 1.5°≤ α ≤ 8.0°, further preferred 2.0°≤ α≤ 7.0°, more preferred 2.5° ≤ α ≤ 6.0° and most preferred α = 3.0° ± 0.2°. Due to the mesh (28) powder agglomerates can be pulverized ensuring a very fine powder with small particle sizes. Since the mesh (28) not only retains the powder particles but also pulverizes powder agglomerates, a homogenous particle size distribution of the dispensed powder particles can be ensured. Due to the small inclination angle α a steep course of the inner surface (22) of the outlet conduit (14) is given leading to an increased flow velocity at a reduced risk of accumulations and agglomerations of the powder particles. Due to the reduced amount of agglomerations inside the outlet conduit (14) the risk of clogging when a powder is dispensed is reduced and a homogenous particle size distribution of the dispensed powder particles is given.Linvention concerne une buse (10) pour appliquer une poudre, notamment un produit pulvérisé de traitement des cheveux, notamment de préférence un produit cosmétique et/ou dermatologique, comprenant un capuchon (12) destiné à être attaché
