The Placebo Group will receive the same four consecutive applications, but with the laser turned off.

It consists of a clinical analysis during the speculum examination of 5 parameters: elasticity, pH, mucosal appearance, humidity and the presence of vaginal secretion. Each aspect evaluated receives a score, which varies from 1 to 5. The score may vary from 5 to 25, and a diagnosis of Vulvo Vaginal Atrophy (VVA) is considered when the values are less than or equal to 15, the maximum score of 25 points means absence of clinical signs of vulvovaginal atrophy. This assessment will be performed by a qualified professional during the physical examination.

The evaluation of the vaginal pH will be carried out through a pH indicator strip, which when inserted in the middle third of the vagina in contact with the mucosa, has the color of the strip changed. Measurement of the vaginal cul-de-sac is avoided, because contact with mucus, blood or semen can alter the reading. The nitrazine tape must remain in contact with the vaginal wall for 5 seconds for later checking the pH on the colorimetric scale provided by the manufacturer. Normal vaginal pH is acidic, during menacme, it should be maintained between 3.8 and 4.5.

A VAS will be used to evaluate the vaginal complaints of the participants. They will receive a figure of a ruler with marks from 0 to 10, whose one end indicates complete absence of symptoms and the other indicates the worst possible symptom. For analysis of the Visual and Analog Scale of Symptoms of Genitourinary Syndrome (GUS) (VAS - SGU), the sum of one to twelve points will classify the symptoms from mild to severe.

The pressure sensor (dynamometer) will be introduced into the vaginal canal, and the resting vaginal pressure (resting muscles) will be quantified. The device will be calibrated, zeroed and it will be asked for the participant to contract their PFMs inwards and upwards as hard as possible 3 times and maintain the contraction for at least five seconds (maximum vaginal pressure), with an interval of 30 seconds between each pull.

The procedure for performing the Ped-test will be as follows: initially, the participant will be asked to place an absorbent with a previously measured weight close to the external urethral meatus. Then, she will be given a 500 mL bottle of water to drink and wait for 15 minutes. Afterwards, the participant will be asked to perform some actions simulating activities of daily living. After carrying out the proposed activities, the absorbent will be removed and weighed on a precision scale, with a minimum reading of 0.1 mg and a maximum capacity of 220 g. Urinary losses are evaluated and classified as follows: losses of up to 1 g are considered insignificant; between 1.1 and 9.9 g are classified as light losses; between 10 and 49.9 g are moderate losses; and above 50 g, severe losses.

The temperature of the vulva, in Celsius degrees, will be evaluated at the eight points of radiation in the vulvar region, with a digital infrared thermometer, which will allow measurement without physical contact. The average of the eight readings will be calculated before and after the diode laser procedure in the 4 consecutive weekly sessions.