Visit Piret Aava, brow groomer to stars like Malin Ackerman and Serena Williams, at the new Eyebrow Doctor location in Harrison, NY (other locales include LA and NYC). She’s known for her microblading, which uses a tiny blade to inject pigment underneath skin, making the brows look fuller—and it lasts up to three years. Says Aava: “With only two artists, myself and [business partner] Monica, we are able to get to know each client personally, ensuring we meet each client’s specific needs.”