Red skin after bathmate usage

Hi there. Anyone else using the bathmate?

After using the bathmate the suction has made my my skin above and around the penis is very red. I think I red somewhere about putting lube between the rubber “rings” on the bathmate and this would reduce the redness in the skin. Anyone know anything about this? The redness goes away after a little while but it’s kinda annoying.

Goal 2016: 10" stretched length, 10" pumped, 8" flaccid.

Flaccid pictures

Erect pictures