How to hide a custom post type

There is a parameter named “public” where you can set if you want the custom post type to be private or public

add_action( 'init', 'create_post_type' );

function create_post_type() {
    register_post_type( 'acme_product',
        array(
            'labels' => array(
                'name' => __( 'Products' ),
                'singular_name' => __( 'Product' )
            ),
        'public' => false,
        'has_archive' => true,
        )
    );
}