This would depend on the actual length of your hair and the skill of the person applying it.
i think that its a sew in weave or either a front lassed wig
No a Sew-in don't break out your hair
You simply sew the tracks of hair into your braids/cornrows with a needle & thread.
they used needles to sew the hair.
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no
no!
sew over top of already sew weft
They would do a cornrow braid, and sew it onto that.
No.
Yea you can , you just have to deep condition it before getting a sew in
It means to sew something a bit short, or shy, of a given measurement, such as to sew a scant 1/4" seam.