Written Laser Hair Removal Practice Exam 2025 – All-in-One Guide to Master Your Certification!

The Alexandrite laser is classified as a specific type of solid-state laser that uses an alexandrite crystal as its gain medium. It operates at a wavelength of approximately 755 nanometers, which is particularly effective for hair removal and treatment of various skin types. It emits light that is selectively absorbed by the melanin in hair follicles, making it beneficial for targeting hair effectively while minimizing damage to the surrounding skin.

The characteristics of the Alexandrite laser set it apart from other types listed in the choices. For example, the ruby laser operates at a different wavelength and employs a ruby crystal, while the diode laser uses semiconductor materials. The carbon dioxide laser, known for its efficacy in skin resurfacing, operates at a much different wavelength and is not primarily used for hair removal. The Nd:YAG laser is another solid-state laser but has distinct wavelengths and applications, often used for deeper tissue penetration and vascular lesions. Thus, the classification of the Alexandrite laser as a ruby laser does not align with the factual basis of its technology and properties.