Very useful! At first, I saw the introduction that it would have whitening and deodorizing effects, so I decided to start. I used it for two days in a row, and I didn't feel any discomfort. Every day I woke up and there would be dirt flowing out, which is not bad. I have a heavy body odor, especially in summer, and my private parts have always felt unrefreshed. I've been sticking to it for the third week and it's really improving. After the whole day, there will be no peculiar smell like before, and the small inner is also very clean! O(∩_∩)O Highly recommended!