If you mean an external wash that you would use in the shower like a body wash, but is specifically made for that area, it's probably ok.
But if you mean internal douches, Don't use them, they can throw off the natural flora, bacteria balance, (yes there is some good bacteria that is supposed to be there), and Ph of your vagina. And you could end up with a yeast infection.
If there is and odd or strong odor that is not your normal odor, that may be a sign of an infection, and you should go to the doctor. Not all infections are caused by having sex, so you could still get one if you aren't sexually active.
And using baby powder to stay dry, just isn't natural. There is always some natural wetness that is suppose to be there. If it seems a little more at times, that's just your vagina's natural way of cleaning itself. And there is sometimes more when we ovulate.
And baby powder could cause vaginal infections as well as urinary tract infections. So, it's not a good idea.
If you are worried about an excess of discharge just use panty liners.
So, yeah normal bathing is the best thing.
Grown woman with 34 life years experience.