Rejuran HB is a Hydro Booster product that combines the benefits of the original Rejuran Healer with a hydrating effect. To address the main drawback of the original Rejuran Healer—pain—a local anesthetic and hyaluronic acid are blended in an optimal ratio, reducing pain by over 50%, making it comfortable even for those sensitive to pain. It is more effective for overall skin balance, anti-aging, and elasticity enhancement, while the hyaluronic acid adds hydration for a luminous, dewy skin effect.