Washington Master Esthetics Practice Exam

What occurs when cells undergo a photothermal tissue reaction?

1. They regenerate rapidly

2. They are destroyed

3. They become dormant

4. They heal without effects

The correct answer is: They are destroyed

When cells undergo a photothermal tissue reaction, the primary outcome is that they are destroyed. This process typically occurs when a specific wavelength of light is used in conjunction with heat, leading to an increase in temperature within the targeted tissues. The absorption of light energy is converted to heat, causing the temperature of the cells to rise significantly. When the temperature exceeds a certain threshold, it results in cellular damage and, ultimately, cell death. Photothermal reactions are often utilized in cosmetic and medical procedures, such as laser hair removal, skin rejuvenation, or the treatment of certain skin lesions. The destruction of the targeted cells is intentional, as it can provide therapeutic benefits such as improved skin texture or the reduction of unwanted hair. While there are situations where cells might regenerate, heal, or become dormant following various forms of treatment, in the context of photothermal reactions, the focus is on the destruction of those cells in order to achieve the desired clinical outcome.