With only 60 percent of U.S. states requiring public schools to teach sex ed, and with in-person classes becoming even sparser than before due to the pandemic, online platforms such as TikTok have become popular hubs for teens to learn about sex. While some of the content isn't exactly trustworthy—including popular accounts recommending vaginal melts to make you taste and smell better down there—users like OB-GYN Jennifer Lincoln, who has more 1.8 million followers, answer common sex questions from a professional perspective.