Hi, TTAnderson. Congratulations on your arm lift! Every plastic surgeon has his/her recommended time for tattooing after plastic surgery, so I would defer to him/her. But generally, I recommend waiting 6 months providing healing has been uneventful and the scar is thin, flat, and stable.Arm lifts often can have more problematic scarring -- taking longer for the scar to "quiet down" and fade, as well as having a higher risk for scar problems: thickening, atrophy, discoloration, widening, stretching, etc. If there are scar issues, these may need to be addressed before tattooing -- for example, scar thickening may require a repeated course of steroid injections and silicone sheeting.In addition, tattooing directly in scars may be more difficult and the pigments may not take as well. Risk of skin tearing, ulceration, and/or infection may be higher, especially in an unstable scar. It is very important to go to a tattoo artist with extensive experience in tattooing within scarring.A tip to consider if you start with partial tattoos before the full sleeve in an effort conceal your arm lift scars: In my observation, I find tattoos placed along a scar in an effort to conceal the scar may actually look odd and make the scar more conspicuous. A more random, meandering tattoo design, that goes in and out of the scar, will very nicely camouflage the scar and detract from the scar itself.Best of luck! Dr. Ghafoori