A dispensing head for a system for dispensing a pressurized product, the head including a body having a mounting shaft for the head on a tube for supplying the pressurized product and a channel for dispensing the product between the shaft and an orifice for dispensing the product, the dispensing orifice being formed between two longitudinal walls, upper and lower, respectively, which are connected on either side, respectively, by a lateral wall of which the transverse dimension is smaller than the longitudinal dimension of the longitudinal walls, and each of the lateral walls has a projection that extends between the longitudinal walls, at least the walls of the dispensing orifice including an antimicrobial agent for the product to be dispensed.