Asked for female, 25years old from Chhindwara
I am sorry to hear about your concern but will be happy to assist you.
Yes, threading or waxing hair will cause it to grow back a little thicker. It is better to thread upperlip hair because you can thread really tiny hair as well, but if you wax it, you will need to wait until hair grows longer before waxing.
Let's connect over a call so that we can discuss your concern in details and make a suitable treatment plan for you.