Laser Technician IBEC Board Exam 2025 – 400 Free Practice Questions to Pass the Exam

Melanocytes, the cells responsible for producing melanin, are larger and more active in darker skin. This is due to the evolutionary adaptation of these cells to produce more pigment as a protective response to higher UV radiation exposure in certain geographical regions where people with darker skin are found. The increased melanin levels in dark skin contribute to a higher tolerance against sun damage, offering a protective barrier against UV rays.

In comparison, other skin types such as thin, sensitive, and dry skin do not exhibit the same concentration and activity of melanocytes. Thin skin generally lacks the thickness required to house large melanocytes effectively. Sensitive skin is characterized by a heightened response to stimuli and may not necessarily involve increased melanocyte activity. Dry skin, while it can result from various conditions, does not imply an increase in melanocyte size or activity; its moisture level is more related to the outer layer of the skin rather than pigment production. Thus, the correlation between larger and more active melanocytes and dark skin is well-established in dermatological studies.