Written Laser Hair Removal Practice Exam 2026 – All-in-One Guide to Master Your Certification!

Overexposure to sunlight before treatment can increase the chances of adverse effects during laser hair removal because UV radiation can cause skin to become more sensitive and react unpredictably to laser energy. When the skin is tanned or sunburned, it may absorb more heat and potentially lead to complications such as blistering, hyperpigmentation, or hypopigmentation following the procedure.

Additionally, sun exposure can damage the skin's barrier, making it more vulnerable to irritation and adverse reactions from the laser treatment. Therefore, it is recommended that patients avoid sun exposure for a certain period before undergoing laser hair removal to ensure the skin is in optimal condition for the procedure.

The other factors listed do not influence the risk of adverse effects the same way. For instance, low hair density can actually be beneficial, as there is less hair for the laser to target. High skin sensitivity may be a concern but does not significantly increase the adverse effects caused by the treatment as much as pre-treatment skin condition does. Recent application of makeup is generally not a significant factor, provided the skin is properly cleansed before treatment.