To prevent paradoxical hypertrichosis, which practice should be followed?

• A. Using excessive energy without cooling.
• B. Using appropriate energy settings and cooling.
• C. Avoid treatment entirely.
• D. Increasing session frequency.

Answer: (B)

Paradoxical hypertrichosis happens when treated skin ends up growing more hair after laser sessions, usually because the energy is too aggressive or cooling isn’t used, leading to heat-related stimulation of the hair follicles. When energy settings are appropriate for the person’s skin type and hair color, the laser can damage the follicle enough to reduce growth without causing excessive heat in the surrounding tissue. Cooling plays a crucial role by protecting the epidermis and reducing uncontrolled heat transfer, which lowers inflammation and the chance that follicles respond by producing more hair. Together, properly calibrated energy and cooling create a safer balance, delivering effective follicle disruption while minimizing that unwanted regrowth.

Excessive energy without cooling would raise the risk of overheating and inflammation, increasing the chance of paradoxical growth. Skipping treatment entirely wouldn’t address hair reduction, and increasing session frequency can add more heat and irritation without solving the underlying issue.