Texas Esthetician License Practice Exam

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What primary factor can lead to variations in Fitzpatrick skin type classification?

Dietary habits
Environmental exposure
Genetic background
Age

The correct answer is: Genetic background

The primary factor leading to variations in Fitzpatrick skin type classification is genetic background. This system classifies skin types based primarily on inherited characteristics, particularly pigmentation, the ability to tan, and the tendency to sunburn. The classification reflects individual biochemical and physiological traits determined by genetics, which influence melanin production and skin response to UV radiation. While aspects such as dietary habits, environmental exposure, or age may affect skin health and appearance, they do not fundamentally alter the intrinsic genetic characteristics that define an individual's Fitzpatrick skin type. These factors can influence how skin behaves under specific conditions or over time, but they are secondary to the genetic factors that establish an individual’s baseline classification within the Fitzpatrick system.