Viviscal Hair Growth Supplements are renowned for their potent blend of minerals, vitamins, and essential nutrients purported to bolster hair growth. “Ingredients such as biotin, iron, zinc, vitamin C, and a marine protein complex present in Viviscal are thought to promote hair health,” double board-certified plastic surgeon and hair restoration expert Hardik Doshi, MD previously told Vogue. Additionally, clinical studies have been conducted to support claims of thicker, fuller hair.