Montana Barber Practice Exam 2026 - Free Barber License Practice Questions and Study Guide

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What distinguishes open comedones from closed comedones?

Open comedones are whiteheads; closed are blackheads

Open comedones are blackheads; closed are whiteheads

Open comedones and closed comedones are types of acne lesions that differ primarily in their appearance and the way they respond to environmental factors. Open comedones, commonly referred to as blackheads, are characterized by their open surface, allowing the sebum and debris inside the clogged pore to oxidize and darken when exposed to air. This results in the typical black appearance.

In contrast, closed comedones, known as whiteheads, occur when the clogged pore remains closed, preventing oxidation. This sealed environment retains the white or flesh-colored appearance of the trapped sebum and debris under the skin's surface.

Recognizing these distinctions is crucial for proper acne treatment and management. Different types of comedones may require different approaches in terms of skincare or dermatological interventions, as they behave and respond to treatment in varied ways.

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Open comedones are pimples; closed are cysts

Open comedones are more harmful than closed

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