Colorado Esthetician Written Practice Exam 2026 – Complete Test Prep

The correct answer is A. High frequency. High frequency is a skincare treatment that involves using a small handheld device that emits a gentle electrical current when in contact with the client's skin. This current helps to sterilize and oxygenate the skin, making it a beneficial technique for treating acne and promoting overall skin health.

Out of the other options:

B. Microdermabrasion typically involves using a handheld device with a rotating abrasive tip to exfoliate the outer layer of the skin.

C. Photoepilation uses light energy to target and destroy hair follicles.

D. Direct surface application is a general term and does not specifically refer to a skincare technique involving a hand-piece held directly on the skin.