If you're on Instagram, you'll have seen influencers promoting all sorts of products - from gadgets to clothes or food. But can you really trust their recommendations?

A BBC investigation found a number of top influencers pushing products that are fake and poor quality.

There’s no evidence to suggest these social media stars knew they were openly promoting questionable brands and companies. And yet, many customers say the only reason why they bought these products was because influencers suggested they ought to.

So should social media stars be held accountable for the promotional deals they make? We explore the dark underbelly of influencer marketing.

Presenter: Marco Silva
Reporter: Omar Mehtab
Additional production: Osman Iqbal

Picture caption: Stock photo of a social media influencer filming herself.
Picture credit: Getty Images