Scalp Science

Quick Answers Is it dandruff or scalp psoriasis? Greasy, yellow-tinted flakes usually point to dandruff. Dry, thick, silvery-white scale with...

A friend texted me a few weeks back, half-joking, half-worried: "Is it normal for your scalp to just... hurt? Like,...

Every thread about hard water and hair loss cites the same thing: "PMC study confirms it." I read that study....

Most people think a clean scalp means stripping away its natural scalp microbiome. That's backwards. A scalp with fewer bacteria...

Somebody messaged me last month saying they'd tried eleven different oily-scalp shampoos in eight months. Eleven. Each one worked for...

3 Key Takeaways Itch isn't one condition — it's a symptom with over a dozen possible causes, from dry weather...

Key Takeaways: Scalp inflammation isn't one condition — it has at least four distinct triggers (barrier damage, yeast overgrowth, autoimmune...

Key Takeaways A sensitive scalp isn't one condition — it's a symptom pattern (burning, tingling, tightness, or pain) that can...

Combination scalp care comes up constantly in the questions I get from readers, and almost every one starts the same...

In my years of practice, I've seen scalp flaking get lumped into one box: "dandruff." But that's rarely the full...