§ 644. Local regulation. Nothing in this article shall be construed to restrict the power of any county, city, town or village to adopt and enforce local laws, ordinances or regulations which exceed the minimum requirements of this article, as long as such local laws, ordinances or regulations are not inconsistent with the provisions of this article. Any local laws or rules regulating weight loss services and products in a city having a population of one million or more and which were in effect prior to the effective date of this article and any notice provided pursuant to such law or rule, shall be deemed to be consistent with the provisions of this article.