Can I show and hide the product description?

Also Bought is very flexible when it comes to configuration options that you can even control the product name, description and vendor visibility.

From the preferences section you have to select the Visual styles option:

There, you can change the visibility very easily from the app preferences page, simply check or uncheck the option box to display the Product name, Product description and Product vendor, and configure the styles of them to meet your needs:

In the screenshot below you can see the Also Bought recommendation slider when the name, description and vendor are hidden.