The American Electrology Association (AEA) is an electrology trade group.
Established in 1958, AEA is the largest professional membership organization for practitioners of electrolysis. Although its name says American, its membership is actually international.
Together with Educational Testing Service they created and administer the Certified Professional Electrologist Exam. Those passing the exam are known as Board Certified Electrologists (from the International Board of Electrologist Certifications), Certified Professional Electrologists (CPE).
I recommend considering an electrologist who holds a CPE certification, which you can find on their website.