The solution to vitiligo

Ratok®therapy is the first selective vitiligo micro-phototherapy.
It was born in 1984, thanks to the fundamental technical and scientific contribution of a team of optical physics and electronics professionals who worked together with dermatologists in order to defeat a very difficult dermopathology aiming at 3 main targets:


revolutionize the irradiation method of conventional devices (total body cabins) with ultraviolet emission (UVA) embracing and inundating the skin surface;


find and employ more suitable UVB rays, i.e. rays able to cause a prompt functional response of the melanocytic structures that had been quiescent for too long;


eliminate the use of all systemic products that cause side effects.

The new generator is born (covered by international patent)

Therefore there was the need to create a device able to emit ultraviolet rays with a very small diameter, measured and guided directly on the vitiligo patch in relation to the subjective skin reactivity. Moreover, it was necessary to find the most effective UV wavelengths from a therapeutic point of view.

So a device with a UV nozzle of 1400 W power was realized. The high pressure generator -a quartz ball containing mercury and spiked gases- can produce a high UV percentage emission, between 280 and 315 nm. This light goes through a particular system of lenses and electromechanical devices that concentrate and micro-measure it. The generator’s container is small, suitable for every part of the body and easily maneuverable by the operator through a stand.

To avoid light reflection, the patch has to be covered with non-reflecting material (mask) presenting one or more holes (depending on the case) large enough to let in the UV light required for a selective photoenergetic stimulation.

In the last five years Ratok®derm methodology has been improved with the introduction of the “bath of Light” in the therapeutic protocol. It allows a homogeneous pigmentation with less contrast between normally-pigmented and hypo-pigmented skin, and it also gave prompt results with no significant increase of the total amount of irradiation absorbed by the patient’s skin.