Secondary Categories Sidebox

Hello, if anyone out there can help me with this simple mod it would be greatly appreciated. My client makes handmade soaps. Each Soap is in several subcategories (scent, texture, purpose) as well as in several ingredient categories. I would like to have these displayed in a sidebox for each of the products on thier specific product details page. Need any more info let me know. Thanks in advance!

Could you not use Product Filters?