Written Laser Hair Removal Practice Exam

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.