Aging doesn't happen all at once. It shows up in stages, some subtle, some structural, and each area of the face changes at its own pace. Stella tracks seven key markers to help you understand your unique aging pattern, not just how your skin looks today.
This gives you a clear baseline, so you can make choices intentionally rather than reacting to every new change you notice in the mirror. A 2025 review noted that the visible signs of skin ageing — fine lines, reduced elasticity, coarser texture — accumulate gradually from both intrinsic factors (age, estrogen shifts in post-menopausal women) and extrinsic factors (UV exposure, oxidative stress), which is why structure is tracked over months rather than snapped in a single mirror check (Ambagaspitiya et al., 2025).
1. Fine Surface Lines
These are light, shallow lines on the surface of the skin. They often show up first around the eyes and forehead where the skin is thinner.
Fine lines can fluctuate with hydration, sun exposure and how well the skin barrier is functioning, which means they are dynamic and often improve with consistent routine care.
2. Deep Static Lines
These are lines that remain visible even when the face is fully relaxed. They form over time as the skin's support structure changes.
Stella tracks their depth and definition to help you understand whether they're stable, gradually softening or becoming more pronounced.
3. Dynamic Expression Lines
These lines appear during facial movement, like smiling, laughing or concentrating. Over time, repeated movement can gradually contribute to more permanent lines.
By tracking when these appear and how they evolve, Stella gives insight into how expression patterns influence your skin over time.
