Clear skin isn't just about whether you're breaking out today. Stella tracks clarity across multiple signals, from pore visibility to healing speed, to show what's happening both above and below the surface.
Breakouts come in different forms, appear in different zones and change over time. By understanding which type you're seeing and where it appears, you can adjust your routine with more confidence and less guesswork. The underlying biology starts well before a lesion is visible: reviews of acne pathogenesis describe comedogenesis as a multi-week process driven by sebaceous stem cell activity and pilosebaceous duct changes, which is why most breakouts were forming beneath the surface days before they appeared (Saurat, 2015).
1. Clarity & Breakout Types
Not all breakouts behave the same. Stella distinguishes between comedones (blackheads and whiteheads), papules and pustules (red, inflamed bumps), and deep breakouts (under-the-surface, tender spots).
Each follows a different pattern, and each responds better to different routine approaches.
2. Clogged Pores (Comedones)
These form when oil and dead skin build up inside a pore. They're considered non-inflamed, meaning they're more about congestion than irritation.
3. Red, Swollen Bumps
These are papules and pustules, breakouts with visible inflammation. When these appear, it's less about buildup and more about how the skin is reacting.
Stella watches how these areas change over time: are they lasting longer or clearing faster? Do they flare during stress or cycle shifts? Are the same zones repeating? Patterns here help guide how gentle or active your routine should be.
4. Pore Size & Density
Pores are not "flaws", they're openings for oil to reach the surface. Larger or more visible pores often reflect natural oil levels or genetics.
Stella measures pore size (how visible each pore appears) and pore density (how clustered they are in different regions). Tracking these signals helps determine whether to focus on balance, exfoliation rhythm or hydration support.
