How Stella Works | Track Your Skin & Personalise Your Routine

How Stella Works.

Track your skin. Understand the why. Improve what matters.

Download the Stella skin fitness tracker app now. Available on App Store for iOS and Google Play for Android devices.

Coming soon.

A smiling woman with curly hair serves as the background for the Stella app's 'How Stella Works' section. Overlays include a recommendation to 'Add to Routine: Retinol 0.5%', noting it's 'Clinically proven for skin turnover & barrier support' with a 'Skin match - 98%'. App Store and Google Play download buttons, marked 'Coming Soon', are also visible, illustrating Stella's focus on tracking skin, understanding changes, and improving results.

The science behind healthier skin.

Stella analyses 150+ skin signals from your face and connects them with your lifestyle, health data, and skincare routine. It’s trained on millions of real, diverse skin scans and backed by the latest dermatology research — no fads, just facts.

What to expect.

Effortless scans, real results. Stella gives you clear, personalised insights — so you know what’s working and what to do next.

1. Scan your face

A smiling woman performing a skin scan with her smartphone, showing the Stella app interface with a calendar view and 'Next scan: Tomorrow'. An overlay bubble says, 'That's three scans in a row. Keep it up! Next scan unlocks Skin Age.' This illustrates Stella's effortless scanning process and how it provides clear, personalized insights to track skin progress and unlock features like Skin Age.

Snap a photo with your phone — it takes under 60 seconds. Indoors is fine, just keep it well lit.

2. See what matters

A smiling woman in a white robe looking at her skin, with the Stella app interface displaying a '91/100 Fine Lines' score. A text bubble explains, 'Fine line activity minimal, a sign of healthy collagen and steady skin turnover.' This image demonstrates how Stella provides effortless scans and clear, personalized insights by measuring skin signals like breakouts, redness, and pigmentation, helping users see what's working and track their skin scores

Measure skin signals: breakouts, redness, pigmentation and more so you know what matters now.

3. Track what's changing

A smiling woman in a white robe looking at her phone, with the Stella app interface displaying 'Fine Lines 85/100' and a 7-day trend graph. A message bubble states, 'Lines are stable. Interested in how sleep or stress impact it?' This image highlights Stella's ability to help users track changes in skin conditions like fine lines and see what's improving, offering smarter insights based on scans.

See what’s improving and what needs attention. More scan equals smarter insights.

4. Connect the dots

A woman sleeping peacefully, with the Stella app interface displaying a 'Sleep Score' of '60/100' and the text 'Poor sleep can make your skin more reactive and dull.' Logos for WHOOP and ŌURA are visible, indicating integration. A notification bubble advises, 'Your skin may need extra help to renew overnight. Supporting turnover can make a difference.' This illustrates how Stella helps users connect lifestyle factors like sleep to their skin health and provides personalized recommendations.

See what’s improving and what needs attention. The more you scan, the smarter your insights get.

5. Know what works

A woman applying a skincare product to her face, with the Stella app interface overlay suggesting 'Add to Routine: Retinol 0.5%', stating it's 'Clinically proven for skin turnover & barrier support' and has a 'Skin match - 98%'. A text bubble advises, 'Retinol helps skin turnover; your skin may need time to adjust. Start slow and buffer with moisturiser.' This image demonstrates how Stella helps users get matched to what works and recommends options from a curated, clinically-backed range.

We’ll show you what’s helping and if needed, recommend better options to suit you.

Track what matters most.

Tracks what matters — lines, breakouts, pigmentation and more. See what’s working and get smart recommendations.

Breakouts, redness and puffy eyes, shift quickly with diet, stress, or sleep.

Dark circles and visible pores change over weeks with hormones and routine.

Lines, pigmentation and sagging evolve as collagen and skin-structure shift.

Connect the dots on your Skin Age.

Training Stress

87

/100

Good

Dial up hydration and anti-inflammatory serums to counter skin stress.

Sleep Score

56

/100

Average

Use a peptide-rich night cream to boost skin recovery when sleep falls short.

Stress Score

75

/100

Moderate

Add niacinamide or adaptogens to calm inflamed skin under high-stress.

Immunity Index

88

/100

Moderate

Focus on barrier-repair ingredients like ceramides and zinc to shield your skin.

Cycle Tracking

84

/100

Good

Switch to exfoliants or oil-controlling actives before breakout-prone phases.

Nutrition/Hydration

40

/100

Attention

Use humectant-rich topicals to compensate for low water intake.

A smiling woman in fitness attire, with the Stella app interface displaying a '32 Skin Age' score. Below, three cards show 'Training Stress 87/100 (Good)', 'Sleep Score 56/100 (Average)', and 'Stress Score 75/100 (Moderate)', each with personalized advice. This image illustrates how Stella connects to wearables to show how sleep, stress, and daily habits affect skin, providing real signals from the body linked to clinical skincare advice.

Stella connects to your wearables to show how your sleep, stress, and daily habits affect your skin. No guesswork — just real signals from your body, linked to skincare advice. Learn more.

Training Stress

87

/100

Good

Dial up hydration and anti-inflammatory serums to counter skin stress.

Sleep

56

/100

Average

Use a peptide-rich night cream to boost skin recovery when sleep falls short.

Immunity

75

/100

Moderate

Probiotics and panthenol offer barrier support for slower healing & reactive skin.

Respiration

88

/100

Moderate

Healthy oxygen flow boosts skin clarity and repair. Add antioxidants and light cardio.

Get advice tailored to you.

A woman smiling, with the Stella app interface displaying 'Add to Routine: Tranexamic Acid 3%', described as 'Clinically shown to reduce dark spots and even skin tone' with a 'Skin match - 98%'. Below, 'Pigmentation 55/100' is shown with a trend graph. This image illustrates how Stella's SkinMatch™ analyzes products against scans, goals, and clinical data to provide objective, unbiased advice and recommend from a curated, clinically-backed range.

Stella’s SkinMatch analyses your products against your scans, goals, and clinical data. If your routine works, we’ll confirm it. If not, we’ll help you effortlessly build one to suit your skin and budget.

Matches ingredients to your biology and goals

Validates the products you already use

Recommends from a curated, clinically backed range

Objective and unbiased. Just what’s right for your skin

What your first eight scans reveal.

Your journey starts here. These first scans pick up fast-changing signals like breakouts, redness, and puffiness — helping Stella learn your skin’s natural rhythm and set your baseline.

Scans 1 - 2
Scans 3 - 4
Scans 5 - 6
Scans 7 - 8

Early Signals

Your first signals — breakouts, redness, puffiness. We start learning your baseline.

A smiling woman with curly hair, with the Stella app interface displaying three circular scores: '94/100 Breakouts', '90/100 Redness', and '75/100 Pigmentation'. This visual represents Stella's ability to detect early skin signals like breakouts, redness, and puffiness, and begin learning the user's skin baseline from the first scans.

Your first signals — breakouts, redness, puffiness. We start learning your baseline.

Patterns Appear

Early shifts in pores, eye area, and dark circles start to show.

A smiling woman with curly hair, with the Stella app interface displaying a 'Pore Visibility' card showing 'Moderate' and a '60/100' score based on a 7-day trend. The card also indicates '2 more scans to unlock trends'. This image highlights how Stella reveals early shifts in pores, eye area, and dark circles as patterns appear after initial scans, connecting to how sleep, stress, and daily habits affect skin.

Early shifts in pores, eye area, and dark circles start to show.

Trends Form

Unlock skin age, eye age & tailored recommendations based on you.

We map how your habits affect your skin. Confidence in the data grows.

Your Skin Decoded

Unlock skin age, eye age & tailored recommendations based on you.

Build your routine. Refine it with real data.

Stella does the work for you, matching over 40,000 products, lifestyle and diet tips to your skin — and helps you understand if they’re working. Over time, your recommendations get smarter, based on real-world results, not guesswork.

Don’t overload your skin

Keep applying your retinol 2–3 nights a week, your skin’s adapting. Consider a barrier-support serum to balance dryness.

Low-Impact Products

Your brightening mask isn’t showing measurable change. Consider removing it — less is more. We’ll keep tracking in case that shifts.

Product Match Update

Based on your scans + goals, your current vitamin C is still a good fit. No need to switch — nice work keeping your routine stable.

Time to Reassess?

Your pigmentation is improving — but slowly. Try a serum with tranexamic acid for the next cycle. Tap here to see matched products.

Breakouts Spiking?

We’re seeing flare-ups aligned with sleep dips mid-cycle. It’s likely hormonal — not your moisturiser. Try a calming serum to buffer your skin.

A man looking at skincare products, with the Stella app interface overlaid showing 'Lines vs Routine' analysis, a '50 Daily score', and 'Retinol Added' status. Three cards below advise: 'Don't overload your skin', 'Breakouts Spiking?', and 'Low-Impact Products'. This image illustrates how Stella matches products to skin and uses real-world results to refine recommendations, helping users build and optimize their skincare routines.

Try Stella Plus Free.

No strings, no card. Get insights. Cancel anytime. Plus get a free Scan Light (coming soon)*.

Pre-register for 6 months free*

A collage featuring the Stella Scan Light skin fitness tracker device, its packaging, charging cable, and a screenshot of the Stella app showing acne tracking and a personalized welcome screen. This highlights Stella's AI-powered personalized skin insights.

Stella Basic

$4.95/m or $49/y cancel anytime

Daily skin scans

Personalised Insights

Smart Recommendations

Routine builder

Weather skin insights

Stella Plus

$9.95/m or $89/y cancel anytime

Everything in Stella Basic

Connect health apps

Skin Age & Eye Age

Skin zone insights

28 day Skin Cycle Report

$10/m credit on Stella Shop*

*Terms and Conditions apply.

Pre-register for 6 months free

r. Alice Rudd explains Stella’s care-first approach to skincare, empowering users to understand and treat their skin with evidence-based support.

Start With Care, Not Perfection.

Great skin isn’t about guessing—it’s about understanding. Stella helps you track your skin and understand what it really needs, so you can make smart choices and see real results.

r. Alice Rudd signature that underpins Stella’s approach to skincare, enabling clients to understand and treat their skin with evidence-based support.

Dr. Alice Rudd - Head of Skin Science

Clinical & Cosmetic Dermatologist

Be first. Get 3-months free*

How Stella Works.

The science behind healthier skin.

What to expect.

Track what matters most.

Fast-changing

Mid-term

Long-term

Connect the dots on your Skin Age.

87

56

75

88

84

40

87

56

75

88

Get advice tailored to you.

What your first eight scans reveal.

Early Signals

Patterns Appear

Trends Form

Your Skin Decoded

Build your routine. Refine it with real data.

Try Stella Plus Free.

Start With Care, Not Perfection.