Permanent Laser Hair Removal (FOTONA)

Laser hair removal works on the principle of selective photothermolysis: the laser emits a wavelength that is preferentially absorbed by the melanin pigment in the hair shaft and follicle. When the light energy is absorbed and converted to heat, the follicle is damaged or destroyed sufficiently to prevent regrowth, while the surrounding skin — which contains far less melanin — absorbs minimal energy and is not injured. To be destroyed, the follicle must…

At AE Derm MUDr. Helena Závodská uses the Nd:YAG 1064 nm mode of the FOTONA 4D system. Nd:YAG is notable for its deeper penetration compared to shorter wavelengths, allowing it to reach bulb-depth follicles even through a longer light path. It is also the preferred wavelength for tanned and darker skin tones, as its lower melanin absorption coefficient reduces epidermal heat build-up that can cause hyperpigmentation in those skin types. For patients with…

Sessions are spaced four to eight weeks apart depending on the body area and the hair growth cycle there. Face and upper lip cycles run faster than legs or back, so intervals differ. Most areas reach significant permanent reduction — typically 80 to 90 per cent fewer hairs — after six to eight sessions, with occasional annual maintenance thereafter. Immediately after treatment the skin may appear red and follicle swelling is common; this settles within…