Welcome to HCM.
First go for routine investigations of blood.
Correct any deficiency if you have.
You can also take multivitamin
and anti oxident medicines.
Problem of white hair is difficult to treat sometimes because of hereditary factor.
Otherwise take good healthy diet(high protein)Avoid oily,spicy foods.
Use proper hair oil and do gentle massage
of oil in the scalp
Don't keep your hair dry for long time.
Consult your physician for better medical management.