Pattern Is the Clue
Where hair thins tells you more than how much comes out. A widening part points toward androgenetic thinning. Even loss across the whole scalp points toward telogen effluvium.
Shedding Versus Thinning
Shedding is hairs leaving. Thinning is each hair growing finer. Telogen effluvium is acute shedding after a trigger: birth, illness, rapid weight loss. It usually resolves within six to twelve months once the trigger passes. Follicles are not damaged, which is why density returns on its own.
What the Evidence Supports
Biotinoyl tripeptide-1 acts on follicle anchoring and anagen density. Rosemary phenolics improve the scalp environment linked with thinning. In a 100-person trial of pattern hair loss, rosemary matched 2% minoxidil on hair count. That trial ran in men. We present it by its design, not beyond it.
Where to Start
Clarify the scalp so treatments reach the follicle. Treat at the root with a serum, not on the lengths. Reduce breakage that reads as loss by conditioning mid-lengths to ends.