Talk to Dermatologist on Meso Serum

my hair fall started due to using hair straightener 7to8 times without heat protection serum, dermatologist ne meso therapy ka bola bt I didn't wann it because it's directly injected into the scalp, so she said ap meso serum hath se scalp pe apply kr lain. so my question is kia meso serum hath se scalp pe apply hota hai ya inject hi hota hai, kindly bata dain.