Eyebrow Threading doesn’t come under Skin Care Curriculum and so the US Board has decided to remove Skin Care License Requirement to perform Eyebrow Threading in US (some states). For certification course call today. You are required to learn How to use thread with care to avoid infections. Hygiene Using Hyfrequency when client has acne or bleeding. Notes on pros and cons. Once you write the test you will be certified to practice in the below states. If you are a trained and Certified Eyebrow Threading Technician then You can Work as an Eyebrow Threader or Own an Eyebrow Threading Business in the Following mentioned States in US – ARIZONA – Requires Only Eyebrow Threading Certification TEXAS - Requires Only Eyebrow Threading Certification CALIFORNIA - Requires Only Eyebrow Threading Certification NEWYORK- Requires Only Waxing License to perform Eyebrow Threading The above-mentioned states in US require only Eyebrow Threading Certification to perform Eyebro