The invention relates to a dry-powder inhaler (100 200), comprising: a body ( 110 210) forming a disper sion chamber ( 111 2 11) a dispensing opening (13 1 23 1) through which the user inhales a loading opening (121 220) receiving a capsule (10) that contains a dose of dry powder to be inhaled and a capsule-opening means (140 265) for ope ning a capsule inserted into said loading opening and emptying said dose of powder into said dispersion chamber, wherein said body ( 110 210), at at least one wall of said disper sion chamber, is made of a tinted transparent material suitable for at least partially filtering ultraviolet rays and making it possible to see inside the dispersion chamber while at least partially masking powder residue stuck to said at least one wall made of tinted transparent material.
