Ok while this post starts off about aliens talking about human stretch marks, it gets really interesting once it goes into the fact that humans have invisible stripes. This is totally true, humans actually have stripes known as Blaschko’s lines. Our skin is covered in stripes that can run up and down the arms and around the torso. To the human eye they are invisible, but they can be seen under UV light. And some people with a genetic mutation have stripes clearly visible. The stripes were discovered by German dermatologist Alfred Blaschko 75 years ago. Also since cats and dogs can see UV light they can see our stripes. That is wild.
(via: Just Sock Thoughts)
