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Which of the following best describes extrinsic aging?

  1. Genetic skin deterioration

  2. Skin wear due to internal factors

  3. Skin deterioration caused by external factors

  4. Natural aging process due to time

The correct answer is: Skin deterioration caused by external factors

Extrinsic aging refers to the process of skin deterioration that results from external factors rather than genetic or natural processes. This includes environmental influences such as UV radiation from the sun, pollution, smoking, and lifestyle choices that can adversely affect the skin's appearance and function. For example, prolonged sun exposure can lead to photoaging, which manifests as wrinkles, sunspots, and loss of elasticity. Intrinsic aging, on the other hand, encompasses natural aging that occurs over time due to genetic factors and biological processes, making it distinct from extrinsic aging. Understanding this differentiation is crucial for estheticians to assess skin conditions accurately and recommend appropriate treatments to mitigate the effects of extrinsic factors on the skin's health and appearance.