How to exclude woocommerece product category in search results?

function exclude_product_category( $query ) {

    if ($query->is_search()) {
        $tax_query = (array) $query->get('tax_query');

        $tax_query[] = array(
               'taxonomy' => 'product_cat',
               'field' => 'slug',
               'terms' => array('excluded-category'),
               'operator' => 'NOT IN'
        );        
        
        $query->set('tax_query', $tax_query);        

    }
    return $query;
}