Hello,
what is the maximum time that it takes for hair to grow after a hair transplant surgery? 6-14 months? please give me a range.

do all the transplanted hair grow the same time?

It generally take 6-8 months for 80-90% of the hair to grow. About 95% of the growth should be seen in 12 (rarely 18) months.

The transplanted hair do not grow at the same time. They grow out in waves. I have personally seen complete hair growth as early as 2 months (in less than 5% of patients) and as late as 18 months for complete growth. Most fall within the 6 to 12 month range. This variability has to do with the individual and not the surgeon or technique itself.

Balding Forum - Hair Loss Discussion

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