Hydration
Moisture retention shapes how smooth, plump, and comfortable your skin feels. Stella tracks hydration across each scan to follow how your barrier is performing.
Measure appearance. Follow change.
Stella follows distinct aspects of how your skin looks across six categories. Repeated scans help you compare your skin with its own history—not somebody else’s ideal.
23 metrics tracked over time, plus 4 characteristics shown with each scan. Appearance-level observations only. Stella is not a medical device.
Six ways to follow appearance.
Each category stays separate so one movement cannot hide another. Open any category to see the signals currently represented in Stella’s content catalogue.
Skin SensitivityHow balanced and resilient your skin appears day to day.ViewClose
Texture
How smooth and even your skin surface feels is tied directly to barrier health. Stella looks at texture to understand how your skin is absorbing and responding to products.
Redness
Visible flushing or irritation signals how reactive your skin is. Stella watches for redness to understand how calm or reactive your skin currently is.
Surface Oil
The oil and shine visible at the time of your scan reflects your sebaceous glands in real time. Stella captures this as a snapshot of your skin's current state.
Visible Capillaries
Tiny blood vessels near the skin surface can appear as fine red or purple lines, most commonly on the cheeks and nose. Stella tracks their presence and any spread.
Clarity & BreakoutsBreakouts, pores and the marks they leave behind.ViewClose
Breakouts
Stella tracks acne activity like pimples and inflamed spots, building a picture of how your skin is reacting to oiliness and congestion.
Pores
Pore visibility is a useful signal. When pores look larger, it often points to higher oil production or changes in skin texture. Stella tracks yours across scans.
Acne Marks
The pink or red marks that linger after a breakout can take time to fade. Stella tracks these post-inflammatory marks and how quickly they clear.
Tone & PigmentationWhere colour sits unevenly, and how that shifts.ViewClose
Pigmentation
Darker spots and uneven tone, including freckles, sun spots, and melasma, are often linked to sun exposure or past irritation. Stella maps what is showing up in your skin.
Sun Spots
Flat brown or tan spots that accumulate after years of sun exposure, usually showing up on the face, hands, and arms. Stella tracks their visibility and spread.
Melasma
Brown or gray-brown patches on the cheeks, forehead, or upper lip, most often triggered by hormones or sun exposure. Stella monitors how they shift over time.
Freckles
Small brown spots that concentrate in sun-exposed areas, freckles often darken through summer and fade in winter. Stella tracks their distribution and intensity.
Aging & StructureLines, firmness and how your face holds its shape.ViewClose
Lines
Fine lines and wrinkles reveal how well your skin is holding onto moisture and elasticity. Stella follows how they develop over time.
Fine Lines
The first subtle signs of change, these shallow lines appear with repeated facial movements. Stella watches how they develop.
Deep Lines
Deeper wrinkles are etched into the skin over years of expressions and natural aging. Stella tracks their visibility and progression scan to scan.
Nasolabial Wrinkles
These lines run from the sides of your nose to the corners of your mouth, deepening with smiling and age. Stella measures how visible they are.
Marionette Lines
Running downward from the corners of your mouth toward your chin, these lines can make the face look sad or tired. Stella tracks their depth over time.
Sagging
As collagen and elasticity decline, the skin gradually loses firmness and lift. Stella tracks where your skin sits on that curve.
Jowls
Sagging along the lower face and jawline develops as skin loses firmness and facial fat shifts downward with age. Stella tracks how defined this area looks.
Eye AreaThe area that shows change first.ViewClose
Dark Circles
The darkness under your eyes can come from pigmentation, circulation, skin thickness, or tiredness. Stella tracks what is contributing most for you.
Puffiness
Swelling around the eyes is usually driven by fluid buildup and can shift throughout the day. Stella captures how pronounced it is at the time of each scan.
Eye Bags
Under-eye bags are mild protrusions beneath the eyes that develop from aging, fluid retention, or fat redistribution. Stella tracks how prominent they appear.
Lacrimal Grooves
Hollows running from the inner corner of your eye toward the cheek can cast shadows that make you look tired. Stella measures how pronounced these are.
Skin CharacteristicsYour starting point — shown with every scan, not tracked as a trend.ViewClose
Skin Age
An overall read of how your skin presents, expressed as a single number alongside your other scores.
Eyes Age
The same read, narrowed to the eye area, which often moves independently of the rest of the face.
Skin Type
Whether your skin reads as oily, dry, normal or combination — assessed separately for your T-zone and U-zone.
Skintone
Your skin's natural depth of tone, used as the reference point every other score is measured against.
Accuracy starts with comparability.
A single score is less useful than a series captured under consistent conditions. Stella is designed to help you follow direction and variation across your own scans.
Consistent capture
Good lighting, a similar position and repeated scanning make sessions easier to compare.
Your own baseline
Stella follows movement from your previous scans rather than comparing you with an external beauty standard.
Visible limits
Scores describe appearance in an image. They do not diagnose biology, disease or the cause of a change.
Build your own baseline.
One scan records today. Repeated scans help you see what changed and what stayed steady.
Start your first scan →Try Stella for free. No credit card required.Stella provides personalised skincare suggestions based on your skin's appearance. These are appearance-level observations, not therapeutic advice. Stella is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. If you have a skin concern, please consult a healthcare professional.