TikTok is full of homemade lip glosses. But should you buy them?

Browsing through the hashtag #lipglossbusiness on TikTok is a journey of the senses. Shimmery pink glosses with butterfly sequins are squirted into tubes. Different oils, pigments and flavors are mixed together to create “the perfect shade of red.” Silver bubble wrap crinkles as it’s stuffed with customer orders. Acknowledging the oddly enticing sights and sounds of the process, many of the videos tout an ASMR experience.

The glosses are eye-catching, handmade and cheap — some selling for as low as $2.99 a tube — making them a hot commodity among makeup connoisseurs on TikTok. Comments sections are flooded with people around the world hoping to get their hands on the products.

But these videos, which have collectively garnered over 700 million views on the short-form video app, can understandably give some people pause. How sanitary is the creation and packaging of these glosses? What ingredients are going into these products, and how safe are they for your skin and body?

Many of TikTok’s top videos place an emphasis on sanitization measures, showing creators washing their hands, wiping down surfaces with Clorox wipes, cleaning their lip gloss filling machines and dousing empty tubes in a cleaning solution before beginning the process. Some give an overview of the ingredients that go into the glosses, like gloss base, coconut oil and in some cases, preservatives.