BROOKLYN Horne, 23, started spending a lot more time online last year when the pandemic hit and she was confined to her home in Kansas City, Mo. She joined TikTok and began browsing skincare tutorial videos. One, by the influencer Jaclyn Hill on the topic of dermaplaning, or facial shaving, caught her eye. Inspired, Ms. Horne ran right over to Walmart and bought a simple blade, then returned home to apply oil and shave all the baby hairs off her face. She began shaving regularly, and even posted her own video of it, captioned: “Normalize women with hairier faces.” (She recognizes the irony of removing hair that she was seeking to normalize; her message, she said, was a call for more transparency around the topic.)