Massachusetts State Board Esthetics Practice Exam

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Prepare for the Massachusetts State Board Esthetics Test with in-depth study resources. Utilize flashcards and engaging multiple choice questions, each designed with hints and explanations for optimal exam readiness.

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What is the main function of sebum produced by sebaceous glands?

To cool the body down
To protect and lubricate the skin and hair
To absorb sunlight
To promote hair growth

The correct answer is: To protect and lubricate the skin and hair

The primary role of sebum, which is produced by sebaceous glands, is to protect and lubricate the skin and hair. Sebum is an oily substance that helps to create a barrier on the skin’s surface, preventing moisture loss and keeping the skin hydrated. This natural oil is also beneficial in maintaining the suppleness of the hair, preventing dryness and brittleness, and adding shine. Furthermore, sebum has antimicrobial properties that can protect the skin from certain bacteria and fungi, contributing to overall skin health. The other options focus on functions that sebum does not provide, such as cooling the body, which is primarily achieved through sweating. The suggestion that sebum absorbs sunlight is also inaccurate, as the skin itself utilizes melanin for UV protection. Lastly, while healthy sebum levels can support an optimal environment for hair follicles, sebum's primary function is not directly to promote hair growth but rather to maintain the hair's condition. Therefore, the substantial role of sebum in skin and hair protection and lubrication is evident.