black head of penis

hi guys, i started yesterday with extenders, i bought “jes” extender and after some minutes the head of my penis become black, it is normal? when i stop the extensor it disappear

Black?!

I could see purple or blue, maybe. But tissue really doesn’t turn black until it’s been dead for quite some time and it sure doesn’t turn back to pink again by restoring flow…

Approach with caution.