For hairfall, needs detailed discussion to provide suitable management, it cud be hormonal, genetic, nutritional, lifestyle , multiple other factors etc
For dandruff, try 8x shampoo, apply only on wet scalp not on length of the hair for 5 to 7 mins and wash 2 times a week. For hair , use shampoo of your choice
No oiling on scalp .
Oil length of the hair 1 hr prior shampoo if dry hair.
Use conditioners and hair serums for dry hair
Next Steps
consult / DM for further discussion