Why does the skin on male genitals darken?

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I was in the shower this weekend with my son (aged 4) after swimming and he awkwardly asked me why mine is darker (than my skin). I had no answer for him. So can anyone answer this for my son who is actually 4.

In: Biology

12 Answers

Anonymous 0 Comments

I see very scientific answers here, but I was once told that the color is the same when it’s erect, so when it isn’t, the skin is more densly packed together and looks darker.

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