See Stella

Startup

Stella is a measurement layer for skin.

Using a smartphone camera, Stella tracks visible skin changes over time, turning something that has never been measured into structured, longitudinal data.

Most skincare decisions today are made without evidence. Products, treatments, and routines are trial and error. Stella changes that by showing how skin actually behaves — week to week, across 26 metrics and six core categories.

Stella connects skin data with signals from wearables, including sleep, stress, and activity, to reveal what’s actually driving changes, not just what’s visible.

Not a diagnostic tool. Not a recommendation engine.
Stella is the missing data layer for skin.

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