Bacterial Vaginosis (BV) is a infectious process of the female genitourinary tract, an important health issue due to the high incidence and high rate of recurrence of the infection. Therefore, new therapeutic modalities are sought with the capacity to minimize drug side effects and reduce cases of recurrence of the disease. The objective of this study is to evaluate the clinical and microbiological response of the 401+/- 5nm blue light emitting diode (LED) in the treatment of women with bacterial vaginosis. The group of women with diagnosis of bacterial vaginosis will be submitted to the light therapy. These women will also be submitted to an evaluation and examination by a ginecologist before and after the therapy. There will also be an evaluation of the clinical condition and about the effects of the light through the questionnaire answered before and after participant's treatment. It's expected that the 41 +/- 5nm LED will destroy the VB demonstrated by laboratory examination and also improves the signs and results analyzed by the gynecologist and participants.

A current treatment proposal is the use of blue LED of 401 +/- 5 nm wich is a light that has antimicrobial effect when exposed to endogenous porphyrin of the pathogens. This exposition produces reactive oxygen and it causes cells death with no possibilities of resistance by the bacterium.

Inclusion Criteria:

• women with 18 to 65 years old and with diagnosis of bacterial vaginosis

Exclusion Criteria:

• women with injury seen by Pap smear, or in use of pacemaker, with diagnosis or suspicion of neoplasias, with heart diseases, pregnant or with diagnosis of epilepsy