Lactacyd was among the first brands of feminine wash in the market. Its main ingredients are lactoserum and lactic acid, both found in milk.
I have to admit that using Lactacyd has made my private parts soft, unlike when I used bath soap when I was younger (I was young and didn't know, ok?)
Anyway, I just notice though that the freshness doesn't last all day. At the end of the day, the genital area smells kind of awful, worse than soap. Did the milk curdle? That I don't know.
Additionally, I have discovered a different brand of feminine wash that only requires a couple of drops for a single usage. With Lactacyd, it is like I need a tablespoon for a single wash. Even with that, honestly, I don't feel clean at all. And my private area and underwear smells really foul after several hours.
After I have discovered other brands, I have not used Lactacyd anymore. Except recently when it had a free bag with it. I tried it again, but still the same results. Nothing has changed. And so, after I finished using the entire bottle (of course I used it all up, I don't want to throw away $4 worth of product) I never bought another one again.