Mine took a solid 5 weeks, but I did not pick at all. I was very gentle when washing, and didn't worry about the glue still being there. Once it started lifting in pretty big pieces at 5 weeks, then I'd help it along. My scar looks great (11 weeks pp now)!
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My Dr told me at my 2 week appt to put baby oil on it for about 15 minutes and then get in the shower. It worked and I don't have anything left. It looks way better and it helped me to feel better about it.
Re: When does dermabond come off?
I never helped it along. Around 6-7 weeks it was gone completely with no assistance from me.
PS- that was 4 years ago and I can't even find my scar it healed so well.