1. Dandruff is caused by dry scalp.
2. Dandruff means you should wash hair less often.
Since people assume dandruff is because of dry scalp, they stop shampooing, which further aagravates dandruff.
3. Shampoo can cure dandruff.
Dandruff treatment can control, not cure it.
4. Dandruff is contagious.
5. Poor hygiene causes dandruff.
Hygiene and dandruff are not linked.