Name a contraindication for laser treatments.

Active skin infections represent a significant contraindication for laser treatments due to the potential for exacerbating the infection or introducing bacteria into deeper layers of the skin during the procedure. Utilizing a laser on infected skin can lead to complications, such as increased inflammation and further spread of the infection. This is particularly critical because lasers can produce heat and create micro-injuries, which weaken the skin's barrier and make it more vulnerable to pathogens. Treating an area with an active infection would not only be ineffective but could also lead to serious health issues and prolong the healing process.

In contrast, having light skin, recent sunburn, or being over 50 years old do not constitute absolute contraindications. While they may require additional considerations or adjustments in laser settings, these factors alone do not inherently preclude treatment.