A dosing cap (1) for powders or liquids including an outer body (2) designed to be inserted into the neck of the container to which the cap (1) is applied and an inner body (3) of a substantially cylindrical shape, which contains the powder or liquid, is mobile inside the outer body (2), and is designed to break the sealing membrane (5) of the dosing cap (1) in response to an axial pressure exerted on its top part. Housed in the inner body (3) is a body (4), preferably cylindrical in shape, which is adjacent to the internal surface of the inner body (1) and is designed to break the sealing membrane (5) of the dosing cap (1) in response to an axial pressure exerted on its top part. Preferably the body (4) is fixed to the sealing membrane (5) of the dosing cap (1).
A dispenser comprises a housing that has a removable tamper proof protective cap and tamper proof ring and is threaded to a container. The container, which is the main package, holds the supplemental component. The housing holds the first component into a plunger type chamber in a fully retracted position and is sealed from the supplemental component. The chamber has a delivery end that is closed before use. When pushed all the way in, the chamber's delivery end becomes open and delivers the first component into the main package.