Different wavelengths of light penetrate the skin to different depths and have different biological effects. In the context of lipo laser machines.
650nm: This wavelength is effective for superficial fat layers and is commonly used for overall body contouring. It stimulates the mitochondria in fat cells to break down fat and release it into the bloodstream.
940nm: This wavelength penetrates deeper into the tissues and is often used for treating deeper fat layers. It is also known for its anti-inflammatory effects and is sometimes used in combination with 650nm for enhanced results.
Both wavelengths aim to create a photobiomodulation effect that stimulates the fat cells to release their stored energy, but the specific wavelength used may vary based on the treatment goals and the area being targeted.