WooCommerce - Show tag description

<?php
  // WooCommerce - Show tag description for themes that don't support this
  // code goes in functions.php for your child theme
  add_action ( 'woocommerce_archive_description', 'show_tag_description', 20 );
   function show_tag_description() {
     if ( is_product_tag() ) {
       $term_id = get_queried_object()->term_id;
       echo tag_description( $term_id );
    }
  }