In the area where you intend to wax, your hair needs to be at least 5mm. That’s about the length of a grain of rice. Generally, it takes about 2 weeks of not shaving for hair to grow to this length. Shorter hair is not long enough to get “stuck” in the wax and be pulled out. If there’s any question, we can always try a test strip as some people can be waxed at less than 5mm.