A question similar to this, but a little different. We know as mentioned in the tagged question that Polyjuice potion will account for injuries, such as Mad-Eye's in Goblet of Fire. How tight is the timeline though?

Say Person A were to steal a hair from person B to use in Polyjuice potion, and then Person B were to receive some large and noticeable injury, would Person A assume that injury with the potion, or would they need to grab a new hair?

  • First guess was new hair, but can't even say why exactly. But then again, maybe not ... Magic! – Don_Biglia Sep 26 '16 at 14:15
  • So save some of your hair from when you were young, then polyjuice yourself back to your own youth for a vacation from your doddering senility later in life – infixed Sep 26 '16 at 14:37
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    @Himarm If I'm understanding this question correctly, it's asking about what happens if person B is injured after person A gets the hair but before person A takes the potion. Whereas the old one is asking about what happens if person B is injured while person A is under the effect of the potion. Not a duplicate. – Rand al'Thor Sep 26 '16 at 17:41
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    @Randal'Thor second answer also covers this – Himarm Sep 26 '16 at 17:43
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    @Randal'Thor posted an answer to the otherone since i didnt like either answer anyway – Himarm Sep 26 '16 at 18:01