Thermage for Crepey Skin on Upper Arms?

In all honesty I have to say that there are no great options for crepey skin on the upper arms. Thermage works by stimulating collagen to regenerate and tighten, so it is in general a good option for nonsurgical skin tightening. However, when the skin is thin, as in crepey, there may not be enough of a collagen "target" to get the desired response. By all means give it a try but don't have high expectations.