Delivery device for a liquid or paste product, comprising a container with a tank for said product, a cover for said container, said cover including a collection chamber (13.1) for the product delivered following manual operation by the user, who, upon removing the cover, uses the product thus delivered, and then re-closes the container with the same cover, comprising: - at least one LED light emitter means, the light beam of which is emitted and directed on the inside of said chamber (13.1); - electronic circuit means for the control and electric powering of said at least one LED light emitter means and electric battery means (15.1) connected to said electronic circuit control means; - electronic timer means connected to said electronic circuit control means, 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, so that when the user re-closes said container with the cover, said control means (15.2) being activated, said electronic circuit means cause electrical power to be supplied to said at least one LED light emitter means for the length of time set using said timer means, during which time the beam of light performs an anti-bacterial action on the inside and on the walls of said chamber (13.1), wherein said container comprises control means for controlling the quantity of liquid or paste product delivered from said tank into said chamber (13.1), where said tank is flexible and is in fluid communication with said chamber (13.1) through a delivery nozzle, and compression means for said flexible tank controlled by means of a thrust device (18.1), movable inside said container, and driven manually from the outside of the same container, while a base plate (11.1) closes the end of said container opposite said cover, and is movably mounted by rotation with respect to the same container, wherein the base plate and the container comprise means for one-directional rotation, wherein said at least one LED light emitter means emits light in the blue range of the spectrum and wherein said one-directional rotation means are shaped with teeth (17.1) and flexible fins (17.2), mutually opposed, which when rotating generate snaps perceptible to the user, corresponding to advancing steps of said plate (18.1) inside said container, for the dosage of said product delivered into said chamber (13.1). - at least one LED light emitter means, the light beam of which is emitted and directed on the inside of said chamber (13.1); - electronic circuit means for the control and electric powering of said at least one LED light emitter means and electric battery means (15.1) connected to said electronic circuit control means; - electronic timer means connected to said electronic circuit control means, 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, so that when the user re-closes said container with the cover, said control means (15.2) being activated, said electronic circuit means cause electrical power to be supplied to said at least one LED light emitter means for the length of time set using said timer means, during which time the beam of light performs an anti-bacterial action on the inside and on the walls of said chamber (13.1), wherein said container comprises control means for controlling the quantity of liquid or paste product delivered from said tank into said chamber (13.1), where said tank is flexible and is in fluid communication with said chamber (13.1) through a delivery nozzle, and compression means for said flexible tank controlled by means of a thrust device (18.1), movable inside said container, and driven manually from the outside of the same container, while a base plate (11.1) closes the end of said container opposite said cover, and is movably mounted by rotation with respect to the same container, wherein the base plate and the container comprise means for one-directional rotation, wherein said at least one LED light emitter means emits light in the blue range of the spectrum and wherein said one-directional rotation means are shaped with teeth (17.1) and flexible fins (17.2), mutually opposed, which when rotating generate snaps perceptible to the user, corresponding to advancing steps of said plate (18.1) inside said container, for the dosage of said product delivered into said chamber (13.1).