I just went to the koordenwinkel to buy me a coticule (was cheaper than I expected so yay! ) and the salesman explained me how to use it (with one of the most beautiful razors I've ever seen I must add), which was very nice of him.

He started out be wetting it with a mixture of water + dreft (which is something used for doing the dishes) first. I knew about the water part but that dreft part was new and I forogt to ask him about it. So can anyone tell me why to add it to the water, does it make it slicker or something?