BeautyCelebrity Hairstylist Justine Marjan Breaks Down the Ultimate Do's and Don'ts of ExtensionsJustine Marjan/InstagramBy Carly Sloane Published: 8:46 AM PST, November 25, 2025Celeb hairstylist Justine Marjan shared her rules for extensions to celebrate the opening of the Bellami Beauty Bar in L.A.Getting luscious locks just got a lot easier thanks to celebrity hairstylist Justine Marjan.