Which of the following is a common post-treatment instruction for laser therapy?

Avoiding hot showers for 48 hours is a common post-treatment instruction for laser therapy because it helps to minimize irritation and inflammation of the treated area. After undergoing a laser procedure, the skin may be sensitive and more susceptible to heat and irritation. Hot showers can increase blood flow to the surface of the skin, exacerbate swelling or redness, and potentially lead to complications such as burns or discomfort. By following this guideline, patients can support a smoother healing process and reduce the likelihood of adverse reactions, ensuring optimal results from the laser treatment.

The other options may not be advisable immediately following laser therapy as they could lead to unwanted effects or interfere with the healing process.