Usually wait for 2 weeks.
A good friend of mine is a hair stylist and she says there is no reason why you could not put extensions or a weave in right after a perm or straightener.
I think that you let the hairstylist perm the parts that are not goin tone braided like the edges and the part that she's leaving out.
Wait till it looks like your hair needs perm then you can put weave in your hair thats waht I do
Me I'm 12 nd my hair luks lyk it needs weave and perm kuz my use 2 b longer but iz now shrter so I don't see weave weave wit
Well your friend is dumb honey because ihave been gettinq perms and weave since 1years old and iknow for a fact yhu can't pt weave in rite after a perm because it breaks your half off and your edqes turn white