Hyaluronic acid pen: The dangers of using the viral DIY lip plumper - USA TODAY

Many people are injecting their lips from home with the viral hyaluron pen. But does it work? And is it safe?

• Many people are using a pen to inject hyaluronic acid into their lips for a DIY lip plump.
• The hashtag #hyaluronpen has over 4.5 million views on TikTok.
• But medical experts w… [+5007 chars]
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