The world of medical aesthetics is filled with different lasers designed for specific skin types. Today, we’ll be taking a look at the Quadrostar Pro Yellow Laser a state-of-the-art, German-engineered table-top laser. As one of the most used lasers in medical aesthetics, you might be wondering what it is and how it works. Here’s everything you need to know: What Is a Quadrostar Pro Yellow Laser? The QuadroStar Pro Yellow Laser is an advanced 577 nm wavelength laser system.