An active component for paint products is disclosed, comprising at least one active agent against insects which is microencapsulated or adsorbed on a mineral adsorbent, and at least one synergistic agent, which is microencapsulated or adsorbed on a mineral adsorbent together with the at least one active agent against insects or separately and independently of the latter. A process for preparing the active component and uses for internal or external applications, in both industrial and civil sectors are also disclosed.