Even skin tone isn't about "perfect" skin, it's about understanding how your skin responds to light, heat, hormones and inflammation. Pigmentation patterns tell a story about your skin's history and how it adapts. A 2026 review of melasma describes it as a chronic, relapsing pigmentation pattern driven by a mix of genetic predisposition, hormonal fluctuations, UV exposure, oxidative stress and inflammation — which is why a single snapshot rarely explains what your tone is actually doing (Liao et al., 2026).
Stella tracks these changes over time so you can see what's stable, what's shifting, and what needs consistency rather than intensity.
1. Hyperpigmentation
This refers to any area that appears darker than your natural baseline skin tone. It can be influenced by sun exposure, past breakouts, inflammation, hormones or genetics.
Stella looks at how deep the colour is, where it appears, and how it changes week to week. This helps you understand whether you need gentle brightening, barrier support or simply more daily protection.
2. Sun Spots (Solar Lentigines)
These are distinct brown spots caused by long-term UV exposure. They're a sign of photoaging and usually appear gradually.
They tend to respond slowly to routines, which is why prevention and protection matter more than aggressive correction.
3. Hormonal Pigmentation
Some pigment appears in more diffuse, symmetric patches, often across the cheeks, forehead or upper lip. This pattern is influenced by internal rhythms and sunlight.
Stella doesn't label or diagnose, it simply tracks intensity and movement over time, so you can see how gentle consistency affects change.
