If you fail to plan, you plan to fail.
Just one trip to the waxologist isn't going to solve or correct a lifetime of ingrowns. It takes patience and maintenance.
When it comes to getting these buggers under control or getting rid of them all together, it means regular visits to the wax room. With new clients I suggest every 3 weeks for the first 2-3 visits. This helps to get that hair growth cycle in line and remove all the "old" hairs so that they will stay smoother longer in between.
After this period we switch to every 4-6 weeks. This depends on how quickly the hair grows. Everyone is different. What I like to do is book for 5 weeks and see how it goes. If the hair is too long, we will do 4 weeks next time. If it's too short 6 weeks.
And the number one rule is no shaving, trimming or tweezing in between waxing appointments. When most people tweeze, they break the hair off because they are tweezing incorrectly. Shaving and trimming just starts the whole process over again from the beginning.
Education and home care are key. Make sure the client understands the why's and the rewards.