Does red-light from sunlight effect the color of our skin

Reply Sun 26 Feb, 2012 05:56 pm
I read that red light from sunlight penetrates the skin deeper than any color. Our skin colors seem to range from a scale or red (light cream to dark brown)

1. Over the years of human history, Does red light have an impact on our genes to how melantonin determines our skin color?

2. In addition, what would happen to the skin tone of humans if blue light penetrated our skin the deepest from the sunlight?
Do you think our skin color would look different or the flesh would feel different?
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Reply Sun 26 Feb, 2012 08:22 pm
@jamil shafi,
What you read may have referred to infra-red light, not the color "red" within white light.

Without looking it up, I suspect that infra-red (heat) penetrates into the skin and feels warm, but I don't think it has the same damaging effects that Ultra-Violet light does.

I believe it's only the higher frequency light which causes skin problems. But it's been a long time since I read about this stuff, so I'm not sure.

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