All soap has lye in it, you cannot make soap without lye. Soap cannot help skin irritations, it is a wash on, wash off product and a cleanser. You could try finding a handmade soap, made of 100% olive oil or a goats milk soap, these should be mild on your skin and not strip it of the natural oils. Skin irritations can be caused from a lot of things - medications, stress, foods, etc. Obviously you have to find the cause to treat it correctly, soap would not be a treatment, just a cleanser that would not irritate your existing problem.