What am I doing wrong when the repigmentation has not started?

You are probably not following the treatment manual and are missing some key parts of the process. Without light (UVB lamp or sun), new pigment will most likely not form.

If you are using a UVB lamp and repigmentation has not yet occurred, you should check whether the protective film is still stuck on the glass. It prevents UVB rays from fulfilling their role 100%.

Another problem can be a poorly set therapy time. The ideal result after radiation is the subtle redness of vitiligo that persists even the next day. It is this gentle burning (erythema) that provokes the formation of a new pigment.

Instructions for irradiation can be found in our article: Phototherapy – Light treatment