New Canadian UVA Superiority Data: Not All Sunscreens Are Made Equally (an in-vitro comparative study)
- Apr 2026
- 2min
SPF isn’t the whole story: The UVA Protection Gap
While UVB causes visible sunburn, UVA penetrates deeper, causing insidious effects such as photoaging, hyperpigmentation, and skin cancer. New in vitro data reveals that a high SPF 50+ label does not always guarantee sufficient UVA protection.
In-vitro Comparative Study Highlights*
A study evaluating eight Canadian-approved SPF 50+ broad-spectrum sunscreens using ISO 24443:2021 protocols found:• Significant Disparity: Many tested SPF 50+ products failed to provide adequate UVA protection (UVA-PF).
• Proven Superiority: La Roche-Posay’s Anthelios Ultra-Fluid SPF 50+ Facial Sunscreen demonstrated robust UVA-PF values 1.8 times superior to other commercially available sunscreens tested.
• Optimal UVA1/UV Ratio: Anthelios provides a high-level UVA1/UV ratio needed for optimal skin protection and health.
Clinical Conclusion
Our data confirms that Anthelios provides the high-level UVA shield that far exceeds other SPF 50+ products, thanks to its synergistic blend of UV filters including Mexoryl XL, Bemotrizinol (Tinosorb S), Octisalate, Octocrylene, Avobenzone, Homosalate, and Ensulizole.*L’Oréal data on file.
Getting the most out of your SPF rating and UVA protection requires the right application
Only 10% of Canadian patients use sunscreen correctly. Dermatologists recommend the teaspoon method for adequate application of their sunscreen. Share these insights with patients