What is true about each laser's wavelength relative to its machine?

Each laser's wavelength is indeed specific to its machine, which is crucial for understanding its intended use and efficacy. The wavelength determines how the laser interacts with different tissues and types of hair, making it essential for treatments in fields like electrolysis and dermatology.

For instance, various lasers are designed to target specific chromophores in the skin or hair, meaning that a particular wavelength will be more effective for certain hair colors or skin types. The specificity aids practitioners in selecting the appropriate laser for each client's individual needs, ensuring effective and safe treatment outcomes.

Other options like general, universal, and variable do not accurately reflect this precision. While some lasers may share certain characteristics, the specific wavelength associated with each machine dictates its unique capabilities and applications, emphasizing the importance of understanding this concept for effective practice in laser treatments.