Restylane Defyne uses hyaluronic acid, a naturally occuring sugar in your body, to give the skin moisture, volume, and elasticity. A recent innovation using XpresHAn Technology has made the Restylane fillers, including Restylane Defyne, even more effective at molding to your skin, so your results are natural and soft. Restylane Defyne’s flexibility and S&L Dermatology Center’s unique ability to inject based on the movement of your face means we are confident that your expressions will remain your own.