Skinbetter Alto Defense Serum | Antioxidant Protection | Stella

Skinbetter Science | Alto Defense Serum 30ml

30ml / 1 fl. oz.

dermatologist approved

skin-ai tracking
$217.99
Quantity

3 months free AI skin tracking included

Get AI-Powered Skin Insights 

Track fine lines, hydration & more

First scan unlocks AI Dashboard

Activated instantly at checkout

Works with Stella app – free
iPhone showing the Stella Skin Intelligence Dashboard Real-time skin scanning in action with Stella’s mobile app—revealing skin health insights and targeted skincare recommendations.
Title

Why Dermatologists Trust This Product

A powerful antioxidant serum featuring 19 protective ingredients to shield skin from oxidative stress, pollution, and environmental damage. Enhances skin resilience—track antioxidant defense trends with AI-powered insights using Stella.

  • Protects against environmental damage

  • Strengthens skin’s natural defenses

  • Brightens and evens skin tone
Title

What You Need to Know

Concerns  Addressed

  • Lines & Aging
  • Redness

Benefits

Selected by dermatologist Dr. Alice Rudd for its powerful, comprehensive antioxidant protection, Skinbetter Science Alto Defense Serum helps shield skin from environmental and oxidative stress. Its advanced formulation with 19 potent antioxidants neutralises damaging free radicals, preventing premature aging, improving skin clarity, and enhancing radiance. Regular use results in brighter, healthier-looking skin that is well-protected against daily environmental damage.

Active Ingredients


Vitamin C (Tetrahexyldecyl Ascorbate): Stabilised, lipid-soluble Vitamin C that visibly brightens skin, evens tone, and offers potent antioxidant protection.

Vitamin E (Tocopherol):Powerful antioxidant that neutralises free radicals, protecting the skin barrier and promoting a healthy, youthful complexion.

19-Antioxidant Complex (Including Coenzyme Q10 & Green Tea Extract):Comprehensive blend that combats oxidative stress, reduces inflammation, and prevents premature skin aging from environmental damage.

All Ingredients: Water (Aqua), Tetrahexyldecyl Ascorbate (Vitamin C), Tocopherol (Vitamin E), Ubiquinone (Coenzyme Q10), Camellia Sinensis Leaf Extract (Green Tea), Ergothioneine, Ceramide NP, Glycyrrhiza Glabra (Licorice) Root Extract, Vitis Vinifera (Grape) Seed Extract, Dimethicone, Glycerin, Sodium Hyaluronate, Cetearyl Alcohol, Glyceryl Stearate, PEG-100 Stearate, Caprylic/Capric Triglyceride, Butylene Glycol, Phenoxyethanol, Ethylhexylglycerin, Disodium EDTA, Xanthan Gum.

How to Use

Apply one to two pumps onto clean, dry skin each morning and evening, gently smoothing across the face, neck, and décolletage. Follow with moisturiser and broad-spectrum sunscreen in the morning for optimal protection against environmental damage.

Pro-Tip from Dr. Rudd:
Layer Alto Defense Serum beneath your sunscreen daily—this powerful antioxidant serum enhances your SPF, providing comprehensive protection against UV and environmental aggressors.

Skin Types

Your Skin. Your Data. Your Power. 

Your phone, supercharged by AI. Track, analyse, and optimise your skin—powered by science.

Meet Stella

Your smartphone + Stella. The future of skin intelligence. Track, analyse, and optimise with AI-powered precision.

Skin Scanner

Your phone, upgraded with AI-powered skin tracking.

Trained on 3M+ images for 98% accuracy

Builds a baseline to reveal real skin trends

Detects micro-shifts before they’re visible

Skin Insights

AI deciphers 150+ biomarkers to unlock smarter skincare.

Tracks hydration, fine lines & much more.

Builds a baseline for real skin trends

Detects micro-shifts before they’re visible

Skin Coach

Your AI-powered trainer for science-backed skincare.

Daily & weekly check-ins track real progress

AI adapts your routine based on real data

200K+ dermatology studies power tailored insights

Smart Stand

Coming Soon. Flawless scans, every time.

Eliminates bad angles & lighting shifts.

Locks in precision for AI accuracy

Launches Stella instantly— scan & go

Meet Stella

Your phone, supercharged by AI. Track, analyse, and optimise your skin—powered by science.

Skin Scanner

Your phone, upgraded with AI-powered skin analysis.

Trained on 3M+ images for 98% accuracy

Builds a baseline to reveal real skin trends

Detects micro-shifts before they’re visible

Skin Insights

AI deciphers 150+ biomarkers to unlock smarter skincare.

Tracks hydration, fine lines & much, much more

94 algorithms, dermatologist-validated for accuracy

Reveals long-term patterns, so you know what works

Skin Coach

Your AI-powered trainer for science-backed skincare.

Daily & weekly check-ins track real progress

AI adapts your routine based on real data

200K+ dermatology studies power tailored insights.

Smart Stand [coming soon]

Locks your phone in place for flawless scans, every time.

Eliminates bad angles & lighting shifts

Locks in precision for AI accuracy

Launches Stella instantly— scan & go
iPhone showing the Stella Skin Intelligence Dashboard Real-time skin scanning in action with Stella’s mobile app—revealing skin health insights and targeted skincare recommendations.

4 Steps to Smarter Skin

1. Scan Instantly

Turn your phone into an AI-powered skin tracker.

2. See the Data

Track hydration, fine lines & more - see real skin changes.

3. Get Expert Insights

Personalised AI + dermatology-backed recommendations.

4. Upgrade Your Routine

Smarter skincare, tailored to you.

The Science Behind Stella

Trained on millions of real skin scans and validated by dermatological research, the Stella Skin Intelligence™ System tells you what your mirror doesn't
Title

150

Biomarkers

Analyses 150+ skin indicators to track aging, hydration, pigmentation and more.

3M+

Scans

AI-trained on 3M+ images for tailored recommendations for diverse skin types.

200K

Research Papers

Recommendations backed by 200K+ dermatology studies —real, up-to-date science, not skincare trends.

Why stella

Start With Care, Not Perfection

Great skin isn’t about guessing—it’s about understanding. Stella bridges the gap between expert knowledge and daily skin tracking, giving you clarity, not confusion. The right data leads to the right decisions, and the right decisions lead to real results.

Dr. Alice Rudd -  Head of Skin Science

Clinical & Cosmetic Dermatologist

Start Tracking for Free 

Want to know more?

Frequently Asked Questions

See All FAQs

How does Stella Skin Intelligence actually work?

Stella’s AI scans your skin using your phone’s camera, analyzing over 150+ biomarkers to track fine lines, hydration, and pigmentation. It detects changes over time—so you can see how your skin is responding to treatments and products.

Trained on 3M+ real skin scans for 98% accuracy.

Validated against 200K+ dermatologist research papers.

Uses machine learning to detect micro-changes invisible to the human eye.

When do I get access to AI tracking?

As soon as you complete checkout, you’ll get instant access to your Stella AI Dashboard. You can access Stella through the browser on your phone or in the Stella app. Just scan your skin to unlock your personalised insights.

Do I need any special equipment to scan my skin?

No, just your phone. Stella’s AI is optimised for standard smartphone cameras—no fancy devices needed.

How often should I scan my skin?

We recommend scanning at least two to three times week to track visible changes, but daily scans give even more precise insights.

Is my data secure?

Yes—your privacy is very important to us. We don’t sell your personal data, and any information you provide (including your skin insights) is stored securely using modern encryption and best practices. We only share data with trusted service providers when necessary to deliver our services, and they’re bound by strict confidentiality and data protection agreements. You’re always in control of your information.