My dad always talks about when he was a kid going to the barber shop with his dad and them giving him a shave with the back of the razor. He mentions how nice the warm lather was, which I get, and he also mentions how nice the lilac water was, which I don't get. I've been wondering what this lilac water is. I think it's generally the water they used to rinse and mix with, but I'm not sure what kind of product it is. Any ideas?