A device for dispensing liquid including a liquid reservoir which can be deformed so as to dispense liquid by pressing on the reservoir, a liquid-dispensing end piece fitted on the reservoir, a channel for the passage of liquid, a channel for the passage of air from the outside to the inside of the reservoir, the channel for the passage of air being closed off by a member made of an air-permeable polymeric material, this material being non-porous, the member being called the air-permeable member.