What does the Fitzpatrick scale measure?

The Fitzpatrick scale is a classification system that measures an individual's skin type and its reaction to ultraviolet (UV) light exposure. It categorizes skin types based on factors such as pigmentation, susceptibility to sunburn, and tanning ability. This scale ranges from Type I, which describes very light skin that always burns and never tans, to Type VI, which is very dark skin that rarely burns and tans easily.

Understanding the Fitzpatrick scale is crucial for estheticians as it informs them about the appropriate skin care treatments and sun protection strategies for different skin types. Knowing how a client's skin type reacts to UV exposure helps in recommending suitable treatments and products, minimizing the risk of adverse reactions such as burns or hyperpigmentation.

While skin hydration levels, elasticity, and the presence of acne are important aspects of skin health and aesthetics, they are not what the Fitzpatrick scale specifically measures. That focus on UV exposure and potential risks makes option A the correct response.