Close-up of a woman parting her hair to reveal a flaky scalp, alongside Insight Professional Clarifying Purifying Shampoo and Scalp Treatment, illustrating the causes of dandruff, dry scalp and scalp care solutions.

Dandruff: What Causes It and How to Treat It (Plus: Is It Just a Dry Scalp?)

What causes dandruff, how to treat it, and how to tell it apart from a dry scalp. Plus beard dandruff, how often to treat, and when to see a professional.

— Charlotte Read