I was only on 40mg of isotretinoin for 2 months before i had to stop taking it, since i only took it for such a brief period, how long should i wait before getting any form of piercings/tattoos?

I would recommend two weeks I don’t believe there’s any specific guidelines however

The concern is the drug may interfere with wound healing, possibly due to thinning of the skin, although there’s controversy about whether or how much it happens. Unfortunately, there is no clear professional guidance on this question, so I do need to defer to other clinicians here in terms of what they’ve seen in practice. But I can tell you that the evidence/literature is sparse on this topic.