When you add description of your product, it’s shown in the Woocommerce tabs and the “Description” title is duplicated there:

To keep only the tab title, there are 2 ways of doing this.

1You need add this code in Jupiter > Theme Options > Advanced > Custom CSS:

.mk-accordion-pane h2 {
   display: none;
}

2You need edit Woocommerce file in the child theme.

Copy the file description.php from the directory wp-content/plugins/woocommerce/templates/single-product/tabs to the child theme with the same directory structure – jupiter-child/woocommerce/single-product/tabs and edit the line 25:

$heading = esc_html( apply_filters( 'woocommerce_product_description_heading', __( 'Description', 'woocommerce' ) ) );

and remove the Description text.

This way you’ll remove the duplicated “Description” title in the description tab content.