Most teeth whitening brands make bold claims without proof. We did the opposite: we sent our Teeth Whitening Powder to Dermatest GmbH, one of Europe's leading independent testing laboratories — and earned three clinical certifications signed off by a dentist, dermatologist, and biologist.
The result? Clinically-proven whitening you can trust, dentist-approved safety you can feel.
20 participants tested our Teeth Whitening Powder for 4 weeks under clinical supervision. Here's what independent specialists confirmed:
✓ Clinically Measurable Whitening – Certified tooth colour improvement within 4 weeks, with visible results in 1-2 weeks for most users
✓ 57% Plaque Reduction – The only teeth whitening brand with clinically certified plaque reduction — improving oral health, not just appearance
✓ 100% Zero Gum Irritation – Every participant experienced no discomfort, irritation, or allergic reactions
✓ 95% Had Zero Tooth Sensitivity – Even after 28 days of daily use, the majority experienced no sensitivity
✓ 5-Star Dermatest® Seal – The highest safety rating possible, awarded to less than 5% of products tested worldwide
✓ Independently Verified by 3 Specialists – Signed off by a dentist, dermatologist, and biologist after rigorous testing
Here's the truth about teeth whitening: Most products either work but hurt, or they're gentle but don't deliver results. We proved you can have both.
Our peroxide-free formula was tested under strict clinical conditions by three independent specialists — a dentist, a dermatologist, and a biologist. They measured everything: tooth colour, plaque levels, gum health, sensitivity, irritation. And we passed with flying colours.
Beyond the clinical measurements, participants shared their honest feedback after 4 weeks of testing:
✓ 100% Effective at Removing Stains – Works on coffee, tea, and wine stains without the abrasiveness of other whitening products
✓ 85% Felt Their Teeth Were Cleaner – Not just whiter — significantly cleaner than regular toothpaste alone
✓ 75% Found the Taste Pleasant – Unlike harsh chemical whiteners, our formula actually tastes good and leaves your mouth feeling fresh for hours (now available in Sweet Strawberry)
✓ 75% Would Continue Using It – When asked if they'd choose this over other whitening products, 75% said yes
The Three Certificates That Prove It Works ✅
Each certificate was issued by Dermatest GmbH after rigorous independent testing. Here's exactly what each one proves:
We know this is a lot of detail — but when it comes to what you're putting in your mouth every day, you deserve complete transparency. Here's the full science 👇
What This Certifies: This is the gold standard for safety. After 4 weeks of daily use by 20 participants, Dermatest® found:
✓ Zero skin reactions in the test area
✓ Zero intolerance reactions suggestive of irritation
✓ Zero allergic reactions (contact dermatitis)
✓ "Excellently" tolerated from both dermatological and specialist points of view
Why This Matters: Most whitening products cause irritation, redness, or discomfort. This certificate proves our formula is so gentle that it earned the 5-Star Dermatest® Seal — awarded to less than 5% of products tested worldwide. It's signed by Dr. med. Werner Voss (Dermatology Specialist), PhD Annika Michaelis (Biologist), and Vanessa Gomes (Dentist).
What This Certifies: Independent clinical testing under dental control confirmed:
✓ Clinically measurable tooth colour improvement verified by dental specialists
✓ Tested over 4 weeks with daily application
✓ Standardised colour measurement used to track results objectively
Why This Matters: Anyone can claim their product "whitens teeth." We proved it with clinical measurements under dental supervision. This isn't subjective marketing — it's objective science verified by standardised testing methods. The certificate is signed by Vanessa Gomes (Dentist) and Dr. med. Werner Voss, confirming the whitening results are real and measurable.
What This Certifies: Independent clinical testing confirmed:
✓ 57.29% improvement in plaque index
✓ Tested under clinical-dermatological and specialist control
✓ Measured using standardised plaque assessment methods
Why This Matters: We're the only teeth whitening brand with this certification. Every other whitening product focuses purely on cosmetic results, we proved our formula actively improves oral health by reducing plaque buildup. Less plaque means fewer cavities, healthier gums, and fresher breath. It's whitening that works with your dental health, not against it.
Clinical Study Details 🔬
Independent Lab: Dermatest GmbH (Germany)
Study Number: ST-AT-2024-00165
Participants: 20 people (ages 18-68)
Duration: 4 weeks of daily use
- Signed Off By: Vanessa Gomes - Dentist
- Dr. med. Werner Voss - Specialist in Dermatology, Venereology, Allergology, Phlebology and Environmental Medicine
- PhD Annika Michaelis - Biologist
We sent our Teeth Whitening Powder to Dermatest® Germany and earned three clinical certifications proving it works:
✓ Clinically measurable whitening within 4 weeks
✓ 57% plaque reduction — the only whitening brand with this certification
✓ 100% zero gum irritation across all participants
✓ 95% had little to no sensitivity even after 28 days
✓ 5-Star Dermatest® Seal — awarded to less than 5% of products worldwide
✓ Signed off by 3 independent specialists — dentist, dermatologist, and biologist
Most teeth whitening brands just ask you to trust their marketing and fake reviews. MySweetSmile gives you three clinical certifications, 7,500+ verified "Excellent" Trustpilot reviews, IndyBest Awards two years running, and Dermatest® 5-Star certification.
Ready to try the only Teeth Whitening Powder that's been independently tested by three specialists, dentist-approved, and triple-certified by Dermatest® Germany?
