1. Hair Growth Status Should Be Checked
In control sessions, the effectiveness of laser epilation is evaluated. If the person uses a razor, it cannot be fully understood whether the hairs have fallen out or have grown back.

2. No Razoring to Detect Weak and Thin Hairs
Some hairs may have become thin and weakened after laser treatment. In the control session, the condition of these hairs is observed and a decision is made whether or not additional treatment will be performed. Using a razor makes this assessment difficult.

3. Extra Laser Shots May Be Required
If the hairs are visible when you go to the control session, the specialist may perform additional shots on the areas that are missing. When the razor is performed, it may not be exactly determined in which area the deficiency is.

In Which Cases Can a Razor Be Performed?
Some clinics may request that you have a razor done 1 day before if you are going to have laser treatment during the control session. However, the final decision should be made by the clinic.

Conclusion
You should not have a razor done during the laser hair removal control session, because it makes the process evaluation difficult. You should follow your clinic's recommendations for the most accurate information.