Intelligence

The dermal papilla is a key signalling niche at the base of the hair follicle. Here is how it influences the hair cycle, miniaturisation and shedding—and what it cannot explain on its own.

What is deep skincare? A science-led guide to topical skincare, ingestible skincare and nutricosmetics — what each route can reach, what the evidence supports, and how they work together.

Does biotin actually help hair grow? A 2026 systematic review finds no consistent benefit without deficiency. Learn when biotin helps, how much you need, its lab-test risks and what matters more for thinning hair.

Postpartum hair loss usually starts 2–4 months after birth and peaks around month four. Learn how long it lasts, what actually helps, when to check iron or thyroid, and when shedding may be something else.

Hair thinning during menopause is common, but falling estrogen is only part of the story. Learn how to distinguish female-pattern hair loss, shedding and scarring alopecia — and what treatments, tests and supplements actually help.