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I ended up using a condom because the "inking" is on the outside of the toy and I simply didn't trust it enough to be placed in my body.

Update on the Inked issues: After attempting to use this dildo a few times, I opted to throw it away for safety reasons.

I never found out just what the "ink" was made up of, and it continued to flake off as it was washed and used. I did use a condom for my own safety concerns. While it proved to be a great design (albeit totally unoriginal) for g-spotting, the follow through on adding the color to the outer layer of glass made this an uncomfortable toy for me to be willing to insert.