DO BLUE LIGHT THERAPY ACNE LAMPS WORK?

It is already proved in the medical field; that the UVB rays from the sun can heal Psoriasis. But a person suffering from psoriasis cannot sit in the sun; for a longer period. If exposed, it may cause skin cancer. To avoid this: the UVB rays have to be given in a controlled manner. For this purpose, handy devices like the UVB psoriasis lamp were us