Can LLLT be used to promote facial hair density on existing follicles after they have been damaged from laser hair removal?

Laser
hair removal (LHR) is considered a hair reduction procedure. Thus, it may not
get every hair on the first or even the fifth pass because each individual hair
is in their own phase along the growth cycle. In other words, human hair growth
is not synchronized such as what is seen in your pet dog.  That is why you are reporting some areas with
no follicles/hairs and other areas with residual coarse hairs. Each of us are
born with a finite number of hair follicles and once a follicle has been
destroyed by laser it will not produce another hair….ever.  Thus, in response to your question concerning the
use of LLLT, there is no data to support that by its use you can stimulate
follicles to promote hair growth IF the follicles no longer exist.

LLLT is unlikely to reverse the follicular destruction that came about from laser hair removal therapies.

Low Level Light Therapy will not be effective for facial hair that has been damaged from laser removal.