Can you use MSM soap on my dogs? I recently found out the dog wash i've been using has sodium laureth sulfate?

I wanna switch to a different one but i hate the smell of most.....btw i only shower for them once every two weeks......the one i'm using has oatmeal, bakign soda and aloe in it.....it smells great but it does have sodium laureth sulfate as the first ingredient....not so great right.....Anyways my msm soap is a natural soap...is it safe to use on my dog?