In the not-so-distant past, when Corona was simply a beer and “TiK ToK” a beloved banger by Ke$ha, beauty dupes—less expensive alternatives to high-end products—were the fascination of keen-eyed sleuths.

Today, what’s changed isn’t their existence but their proliferation. The hashtag #dupes in TikTok’s beauty category has increased by 50 percent in the last year, according to market-research firm Spate, with nearly 20 million average weekly views. Now, dupes are louder and prouder than ever.