10 sessions— and the hair in the underarm area is barely noticeable, while shaving is no longer part of the client's regular routine.

In laser hair reduction, the key chromophore is melanin.

The Quidion Lite Pro delivers controlled 808 nm diode laser energy. The light energy is absorbed by the melanin in pigmented hair structures and converted into heat.

This principle is known as selective photothermolysis:

808 nm light → absorption by melanin → conversion to heat → thermal effect in follicular structures → gradual reduction in hair regrowth

In other words, the diode laser no longer works only with the part of the hair we see above the skin's surface. The thermal effect reaches the associated follicular structures involved in hair formation and regrowth.

Hair within a single treatment area is at different phases of the growth cycle at the same time.

The most favorable phase for laser hair reduction is the anagen phase, when the hair is actively growing and has a functional connection to the follicular structures.

That's why professional laser hair reduction is built as a series of sessions with intervals: each subsequent treatment works with the portion of hair that is in the appropriate growth phase at that time.

In this case, the course consisted of 10 sessions at 4–10 week intervals.

This case used 3 Hz, a medium pulse duration, and above-average power — parameters the specialist selected specifically for this client.

808 nm Diode Laser
The gold standard of professional laser hair reduction

QDC Technology
Zemits' proprietary technology for stable, controlled laser delivery

3 Interchangeable Tips
Precise work on the face, body, and hard-to-reach areas

Compact Professional System
A complete diode laser workflow without unnecessary bulk

Adjustable Parameters
Energy, pulse duration, frequency, and cooling — tailored to the individual client

Multi-Layer Cooling
Four cooling mechanisms for comfort and temperature control