These seem to be quite popular here in the UK. There aren't any side effects listed, but some people find certain soaps to be irritating to the skin. It's possible you could develop irritation or even a rash from it.
Hmm. I have never heard of it yet. Is it a new brand? Of what beauty products? I don't usually use products that are barely known to other people as well. I kinda scared of using such products.