By Lauren Haughey Haircare tips and tricks flood TikTok on a daily basis – but an expert claims that one in particular actually works. From salmon sperm facials to Kardashian-inspired breast milk beverages, social media is brimming with an overwhelming amount of beauty hacks. And distinguishing facts from baseless myths is getting harder by the day. However, a salon professional at Roxy Hair says that one viral trick is certainly worth the hype, but is definitely not a quick or guaranteed fix. “Rosemary oil has blown up in the haircare community, with claims that it can increase hair growth wh…