Delivery device (10) for a liquid or paste product, comprising a container (11) with a tank (12) for said product, a cover (13) for said container (11), said cover (13) including a collection chamber (13.1) for the product delivered following manual operation by the user, who, upon removing the cover (13), uses the product thus delivered, and then re-closes the container (11) with the same cover (13), comprising: - at least one LED light emitter means (14), the light beam of which is emitted in the blue range of the spectrum and directed on the inside of said chamber (13.1)； - electronic circuit means (15) for the control, and electric powering of said at lead one LED light emitter means (14) and electric battery means (15.1) connected to said electronic circuit control means (15)； electronic timer means connected to said electronic circuit control means (15), for timing the electrical power to said at least one LED light emitter means； control means (15.2) for the electrical shut-down of said electronic circuit control means (15).
