You look for change over time, not for a verdict in the mirror. The reliable early signs of pattern hair loss are a gradually widening part, more scalp showing at the crown in photos taken with flash, temples creeping back, and a ponytail or grip of hair that feels thinner than it used to.
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Look for pattern, not for volume. Pattern hair loss follows a shape, corners of the hairline in men, a widening part in women, and a crown that thins from a point outward. Diffuse thinning everywhere all at once is usually something else. And the earliest sign isn't gaps at all. It's the hair getting finer, which is why people notice years after it started.
The mirror is a poor instrument because you adapt to gradual change — you literally cannot remember what your hair looked like eight months ago with any precision. Dated, standardized photos remove the guesswork.
That is what the free Uberhair hair check is for: guided photos from your phone, assessed by a real network doctor, from the comfort of your home — so the question stops being a feeling and becomes a doctor's answer. From there, network clinics measure change with GroTrack imaging.