Paid advertising for niche site product review business model

Normally I only utilised organic traffic, and used this business model for the last few years.

However I’m keen to lea more. I’ve seen a lot of chatter about paid advertising as another viable method, but it seems to be coected to sites that offer a service or landing pages that offer 1 product (from click and etc)

How would it apply for the traditional product review niche sites, like a beauty blog that has info, reviews and tips etc for example

I’m struggling to grasp how you can...

Paid advertising for niche site product review business model