Abstract: The present disclosure relates to an attachment comb (70), particularly a skin protecting comb, for a blade set (22) of a cutting head (20) of a hair cutting appliance (10), the attachment comb (70) comprising a supporting frame (72), a plurality of comb teeth (74) that are arranged in a series (82, 84) and that define a skin contact zone at a top side (124) thereof, wherein the teeth (74) extend from the supporting frame (72) and comprise rounded tips (116, 118) at frontal ends thereof, wherein the teeth (74) are non-uniform along the series (82, 84) and comprise two outer lateral teeth (76) that define lateral ends of the series (82, 84), and central teeth (78) arranged therebetween, and wherein at the lateral teeth (76) a lateral teeth tip radius (Rtl) is present that is greater than a tip radius (Rtc) of the central teeth (78). The disclosure further relates to a cutting head (20) and to a hair cutting appliance (10).