Your preoccupation with dandruff, hair fall, and premature graying can be inspired by different reasons. It is best to practice proper hair hygiene, use anti-dandruff shampoos, and consider the consumption of a healthy diet with all required vitamins and minerals. However, if the problems continue, it is suggested to visit a dermatologist or trichologist for a detailed analysis and an individual treatment program. 

Dandruff in the scalp is due to excess sebum (natural oil) production along with increased activity of a fungus called Malassezia in the scalp. Antifungal shampoos containing Ketoconazole, Ciclopirox, selenium sulphide can help treat the dandruff. If it is severe, oral antifungals are also prescribed for a short duration. Salicylic acid, coal tar shampoos are also prescribed in case of excess flakiness of scalp. Hair fall may be due to dandruff, nutritional deficiencies, stress or due to genetic factors. It is recommended to visit a dermatologist who can diagnose the cause of hairfall and may suggest treatment accordingly. Trichoscopy of the scalp may help in understanding the nature of the scalp and condition. Nutritional supplements, Capixyl containing serum, Minoxidil solution, oral supplements containing vitamin and minerals are prescribed by the dermatologist to treat the hair loss. Change in hair colour in beard and scalp may be due to nutritional deficiencies or strong hair colours or genetic causes. Dermatologist’s help may be needed to treat the same. Calcium pantothenate containing supplements may help slow down the greying and sometimes restore the colour of hair.