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How do Red and Near-Infrared light wavelengths affect melanin production in the skin? Can they cause hyperpigmentation or exacerbate melasma? What about other photobiomodulation wavelengths like Blue, Green, Yellow? Does heat play a role in causing a pigmentation response? While Sunlight and UltraViolet (UV) light are known to affect skin pigment through tanning, recent studies have looked into the influence of other wavelengths of light on skin pigmentation response. The popularity of Red and Near-Infrared LED panels and many other types of light therapies at home has led to questions if it would affect or worsen hyperpigmentation conditions and melasma,...

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