ELI5 mode
Tanning is the process of treating animal hides with chemicals like tannins to turn them into durable leather, a technique that's been pivotal in human history for creating clothing, shoes, and tools. In modern usage, it also refers to the darkening of human skin through exposure to ultraviolet light, either from the sun or artificial sources, often for cosmetic reasons but with growing awareness of associated health risks like premature aging and skin cancer.
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