Lisa's skin tone change is likely due to a combination of factors, primarily environmental.
Environmental Factors:
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Reduced Sun Exposure: Lisa's move from a hot, sunny country (implied to be Thailand based on the reference) to South Korea significantly reduced her sun exposure. Prolonged exposure to ultraviolet (UV) radiation from the sun darkens the skin (tanning). Less sun exposure allows the skin to revert to a lighter natural tone.
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Climate Change: The significant difference in climate between a hot and a cold country plays a role. The hot, sunny climate in her birthplace likely resulted in a more tanned complexion. The colder, less sunny climate of South Korea would lessen the tanning effect.
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Other Lifestyle Factors: While not explicitly mentioned, factors like diet, hydration, and skincare routines could also contribute to changes in skin tone.
The reference states, *"Lisa was born and raised in a hot country where her skin was frequently exposed to hot sun rays*, hence making her skin more tanned. She then moved to South Korea, a colder country, which is a drastic change from the typical hot weather in Thailand." This directly supports the explanation above. The change in environment, specifically the reduction in sun exposure, is the primary cause of the apparent lightening of her skin tone. It's important to note that this is a natural process related to sun exposure and not necessarily a change in inherent skin pigmentation.
