Safety is definitely the number 1 concern.  I&#x27;m not sure how long trials will need to run before they can confirm there is no increased cancer risk.<p>Also a concern.  If it&#x27;s gone in a year, what does it look like in 6 months?  Are you going to look like you have a nasty blob-bruise for 6 months as the definition fades and the ink migrates?