How TikTok is reshaping how social media advertises products : Planet Money : The Indicator from Planet Money TikTok has become one of the most popular social media platforms in the world, and increasingly, a powerful tool for marketing. Today, we learn why TikTok makes us buy.

TikTok made me buy it

TikTok made me buy it

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A sampling of products Mayowa Aina bought after seeing them on TikTok. Mayowa Aina hide caption

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Mayowa Aina

A sampling of products Mayowa Aina bought after seeing them on TikTok.

Mayowa Aina

When Mayowa Aina uses social media, she says she's usually immune to the barrage of ads and influencers trying to sell her stuff. So she was kind of flabbergasted when she realized how many products she's bought in recent months because she saw them on TikTok. "It's so good at parting me from my money," she says of the app.

And she has lots of company. The hashtag #TikTokMadeMeBuyIt has racked up about 8 billion views on the platform.

So today, we try to answer Mayowa's question: why does this app seem to be so effective at getting into our brains — and making us pry open our wallets?

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