Skin hydration after 1 hour
Independent clinical studies
Measured Performance
The finished ELIXIRA serum was evaluated in independent in vivo studies for hydration, skin comfort and pollution-particle adhesion.
Pollution-particle adhesion vs untreated control
Residual particles after gentle cleansing
Agreed skin felt more comfortable and nourished after 24 hours
Transepidermal water loss after 24 hours
Hydration & comfort study
Independent 24-hour in vivo clinical study conducted on the finished product with 30 volunteers.
Anti-pollution study
Independent randomized, assessor-blinded split-face clinical study conducted on the finished product; 32 enrolled and 31 completed.
Study details
How the results were measured
Both studies were carried out by an independent contract research organisation on the finished serum. Key protocol details and results are summarised below.
Hydration & skin barrier
- Laboratory
- Eurosafe CRO, France
- Report reference
- H24-AB-2025-09-001
- Period
- September 2025
- Panel
- 30 healthy women, 25–55 years, dry to normal skin
- Design
- Single application (2 mg/cm²) on the forearm; untreated control area
- Instruments
- Corneometer® CM 825 (hydration), Tewameter® TM 300 (TEWL)
| Time | Skin hydration (a.u.) | Change vs baseline | Untreated area |
|---|---|---|---|
| Baseline | 45.3 | — | 45.1 |
| After 1 hour | 74.8 | +65.2% | 45.0 |
| After 8 hours | 61.2 | +35.1% | 44.9 |
| After 24 hours | 53.6 | +18.2% | 45.4 |
Differences versus the untreated area are statistically significant at every time point after application (p < 0.001).
Transepidermal water loss (TEWL) after 24 hours
10.6 → 8.9 g/m²/h (−15.0%, p < 0.01) · untreated area −1.0% (not significant)
Volunteer perception after 24 hours
- 92% felt less tightness
- 95% felt skin was more comfortable and nourished
- 100% found the texture pleasant and fast-absorbing
Anti-pollution (split-face)
- Laboratory
- Eurosafe CRO, France
- Report reference
- ANT-PO-2026-03-11
- Report date
- March 2026
- Panel
- 32 volunteers enrolled, 31 completed
- Design
- Single-centre, randomised, assessor-blinded split-face study; one half of the face treated, the other untreated
- Method
- 2 mg/cm² applied, 15-minute film formation, exposure to standardised pollution-like particles, image analysis before and after gentle cleansing
| Measure | Untreated | ELIXIRA | Change |
|---|---|---|---|
| Particle-covered area (%) | 18.7 | 14.0 | −25.1% |
| Residual particles after gentle cleansing (%) | 12.9 | 8.1 | −37.2% |
| Particle density index | 1.00 | 0.76 | −24.0% |
All differences are statistically significant (p ≤ 0.002).
Tolerance
No serious adverse events. Mild, transient redness or stinging was reported by 5 of 32 volunteers.
Results relate to the conditions of each study and may vary between individuals. ELIXIRA helps reduce the adhesion of pollution particles; it does not claim complete protection. Documentation for distributors and professionals is available on request.