Julyne Derrick, from About Beauty, has been for a threading treatment as a new year treat. Read her article here:

What do I think? Loved it. Not only is it much cheaper than an eyebrow
waxing, but it was a bit less painful, didn’t
involve sticky wax and is really a cool concept (regular sewing thread
is used!). Plus, it took less than 5 minutes to do both eyes.