Aesthetic Medicine

Laser and unwanted hair

Almost the entire surface of our body is covered with hair, most of which is light and thin, therefore not visible. It is surprising to imagine that the forehead is the most densely covered part by hair follicles. On the other hand, some hairs are darker and thicker. Scientifically speaking, we can divide them into two major families: those of arterial origin (mostly red) and those of venous origin (blue, green-blue, black). Their color varies according to origin, depth, and size, ranging from red to blue.

The excessive presence of hair (hypertrichosis) in women is a fairly common aesthetic issue. It can be caused by constitutional factors or hormonal dysfunctions. Heredity also plays a prominent role. If hypertrichosis is significant or appears at a young age, it is necessary to investigate the cause by conducting appropriate laboratory and instrumental tests (such as ovarian ultrasound). Therefore, the problem needs to be understood before being treated

In recent years, modern technology has produced laser devices capable of addressing the issue of excess hair quickly and effectively. A laser emits a highly concentrated and selective beam of light, targeting the hair follicle. Various types of lasers are available on the market (diode, ruby, Nd:YAG, etc.) suitable for hair removal. The action of most lasers on the market involves damaging the pigment present in the hair follicles. By pulsing for a fraction of a second—enough time to vaporize the pigment—the laser simultaneously acts on multiple hair follicles, eliminating or significantly slowing down hair regrowth. The most modern lasers are extremely fast, allowing for the treatment of large areas in a short time, and they come equipped with cooling systems that disperse the heat emitted by the machine, minimizing discomfort and redness after treatment.

Since most lasers can only target hairs in the growth phase, and not all hairs grow simultaneously, multiple sessions are necessary (typically 3/4 in the first year, 2/3 in the second, and one in the third). From the first session, there is a drastic reduction in hair, and the regrowing hairs are weaker and lighter.

Outstanding results are achieved in the treatment of dark and thick hair, while results are more modest for light and fine hair.

The use of medical lasers is strictly reserved for physicians, as these machines can be potentially dangerous in inexperienced hands. However, lasers have been produced for use by non-medical personnel (e.g., aestheticians), but their power and effectiveness are significantly lower.

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