Certain medical conditions such as pregnancy, diabetes, allergies or taking blood thinners will prohibit this service. What is the best shape and color for your brows? Mapping the perfect shape is so important. The faint outline must be done without a topical numbing agent. There is some pain but is usually minimal.  Everyone is different.  I use a reputable Primary numbing cream which is set for 20 minutes and a Secondary numbing cream is used throughout. I have a comfortable space with soothing music, although chatting is a great option too!