Thanks for all the responses everyone and thanks Jewel for taking time to lay out that taxonomy.

So what you're saying is, it's better to have one page /whitening with all the different services in full, than to have:

/whitening/ - hub page H2s for each service and a paragraph on each with a link to more i.e.

Home Whitening Kit

with a link to:

/whitening/home-whitening-kit/ - full page with lots of in depth info, linking back to main hub page for other whitening services.

Thank you.