By the enactment of this article the state fully exercises the exclusive right to regulate and control the labelling and ingredients of household cleansing products distributed, sold, offered, or exposed for sale in this state, within the scope and limitations of this article. The terms "regulation" and "control" include prohibitions or other restrictions on the distribution, sale, offering or exposing for sale of such products in this state. In order to assure statewide uniformity, such regulation and control by any political subdivision of the state of such products is prohibited after June 25, 1971 provided, however, that any such regulation and control in effect on June 1, 1971 shall be unaffected by this section.