Interdental cleaner having a rod-like support made of a first plastic, which has a handle part at its rear end region and has a cover made of a soft flexible second plastic at its opposite front end region, wherein several radially-protruding fingers are situated on the outside of the cover and are integrally joined to the cover in their base region, wherein the cover has a tip region having a length in the range of 0.5 mm to 2.0 mm and preferably in the range of 1.0 mm to 1.5 mm on its front end, facing away from the handle part, and a functional region, which adjoins the tip region in the direction of the handle part and extends up to a rear finger (14.1) closest to the handle part, wherein the functional region is divided into a front region, which is directly adjacent to the tip region and has a length in the range of 1.0 mm to 2.5 mm, and in particular in the range of 1.5 mm to 2.0 mm, a rear region, which extends forwards from the rear finger (14.1) and has a length in the range of 1.0 mm to 2.5 mm, and in particular in the range of 1.5 mm to 2.0 mm, and a central region, which is arranged between the front region and the rear region, wherein, in the front region, at least one of the fingers or at least 50% of all fingers there or at least 80% of all fingers there or all fingers there have a front slenderness S v of at least 3.0, wherein, in the rear region, at least one of the fingers or at least 50% of all fingers there or at least 80% of all fingers there or all fingers there have a rear slenderness S H of at least 3.0, wherein the slenderness S i results from the quotients of the axial length I of the finger and its maximum diameter (d) in the base region (S i = I/d), wherein the front slenderness (S v) of at least one of the fingers, which are arranged in the front region of the cover, or the front slenderness (S v) of at least 50% of all fingers there or the front slenderness (S v) of at least 80% of all fingers there or the front slenderness (S v) of all fingers there is less than the rear slenderness (S H) of at least one of the fingers arranged in the rear region of the cover, or than the rear slenderness (S H) of at least 50% of all fingers there or than the rear slenderness (S H) of at least 80% of all fingers there or than the rear slenderness (S H) of all fingers there. wherein several radially-protruding fingers are situated on the outside of the cover and are integrally joined to the cover in their base region, wherein the cover has a tip region having a length in the range of 0.5 mm to 2.0 mm and preferably in the range of 1.0 mm to 1.5 mm on its front end, facing away from the handle part, and a functional region, which adjoins the tip region in the direction of the handle part and extends up to a rear finger (14.1) closest to the handle part, wherein the functional region is divided into a front region, which is directly adjacent to the tip region and has a length in the range of 1.0 mm to 2.5 mm, and in particular in the range of 1.5 mm to 2.0 mm, a rear region, which extends forwards from the rear finger (14.1) and has a length in the range of 1.0 mm to 2.5 mm, and in particular in the range of 1.5 mm to 2.0 mm, and a central region, which is arranged between the front region and the rear region, wherein, in the front region, at least one of the fingers or at least 50% of all fingers there or at least 80% of all fingers there or all fingers there have a front slenderness S v of at least 3.0, wherein, in the rear region, at least one of the fingers or at least 50% of all fingers there or at least 80% of all fingers there or all fingers there have a rear slenderness S H of at least 3.0, wherein the slenderness S i results from the quotients of the axial length I of the finger and its maximum diameter (d) in the base region (S i = I/d), wherein the front slenderness (S v) of at least one of the fingers, which are arranged in the front region of the cover, or the front slenderness (S v) of at least 50% of all fingers there or the front slenderness (S v) of at least 80% of all fingers there or the front slenderness (S v) of all fingers there is less than the rear slenderness (S H) of at least one of the fingers arranged in the rear region of the cover, or than the rear slenderness (S H) of at least 50% of all fingers there or than the rear slenderness (S H) of at least 80% of all fingers there or than the rear slenderness (S H) of all fingers there.