Eyebrow Threading

Has anybody ever had this done?  I'm considering it, but am somewhat wary of needles.  I have to do something though since my eyebrows grew in kind of wonky after chemo.  Not sure if it's going to give me that look of perpetual surprise either.  If somebody can give me an idea of the pain level I would be dealing with and what's involved in terms of maintenance - it would be most appreciated!