What Treatments Or Medicines Can Help With Dry Scalp, Dandruff, Alopecia On Beard And Body, And White Hair?

Hello I have some skin issues I have a dry scalp dry hair dull hair sheets on scalp neck and beard I m also suffering from alopecia on beard and other body parts I have white hair on head and beard Please recommend some medicines for white hair Alopecia dry scalp sheets of dandruff I m 27 years old