If your skin is already dry, the use of a soap or foaming cleanser is not necessarily the best idea. There is nothing wrong with a gel cleanser as long as it is not soapy as this will exacerbate the dryness. You will find that if you do, your skin will become more dry, more sensitive, and you can then become prone to breakouts and pigmentation. So personally I am not particularly pro the use of soaps or soap bars on the face, neck and chest.