Written Laser Hair Removal Practice Exam 2025 - Free Laser Hair Removal Practice Questions and Study Guide

Question: 1 / 400

What is the main function of melanin?

To cool the body

To produce vitamin D

To protect skin from UV radiation

Melanin is a pigment that gives color to our hair, skin and eyes. Its main function is to protect the skin from the harmful effects of UV radiation, such as sunburn and skin cancer. Melanin can absorb UV rays and prevent them from damaging skin cells. Option A is incorrect because skin temperature regulation is primarily maintained by sweat and blood flow. Option B is incorrect because melanin does not play a direct role in vitamin D production. Option D is incorrect because melanin does not affect hair growth; hair color is determined by the type and amount of melanin present. Therefore, the main function of melanin is to protect skin from UV radiation.

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To regulate hair growth

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