welcome to hcm
thanks for the query
causes of hair loss are stress, hormonal
imbalance, illness, improper diet, pollution, aging, infections, use of chemicals,sun exposure, depression
, insomnia etc
if it happens due to medication can be solved by terminating the medicine.
take more proteins,3 to 4lit of water,fruits, green leafy veg.
avoid harsh shampoo.yoga and grething excercises helpful.take proper sleep.avoid stress minoxidil
is helpful if its androgenic alopecia
.but no permanent treatment for androgenic alopecia . in that case hair transplantation
is needed for permanent treatment
wish you a good day and take care