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What are the characteristics of Ruby and Alexandrite lasers?

  1. Long wavelength

  2. High intensity

  3. Low frequency

  4. High frequency

The correct answer is: High frequency

Ruby and Alexandrite lasers are known for their high frequency characteristics. This high frequency allows for precise targeting of the melanin in the hair follicles, making these lasers effective for hair removal treatments. In contrast, options A, B, and C do not accurately describe the specific characteristics of Ruby and Alexandrite lasers.