Zen-Spa.com allows you to view your order history and easily print out invoices. To take advantage of you membership tools, first make sure that you are logged in by using the "My Account" link at the bottom of the site.
The orders review page shows you a list of all past purchases on the website. You'll also be able to view general information regarding each purchase. To view detailed information, click the order's number.
The order details page shows brings up details for the a specific order. You'll be shown details such as billing address entered, order total, etc. For a printable version, click the link at the bottom.