Next-Generation Sunscreen Efficacy Testing: Non-Erythemal, Non-Pigmentation Approaches Using ISO 23675 and ISO 23698

The recent publication of ISO 23675 and ISO 23698 represents a significant advancement in the evaluation of sunscreen efficacy. These newly standardized, non-erythemal methods are currently under active assessment by the industry for their reliability, applicability and potential to supplement or replace traditional in vivo erythemal testing. Based on UVR transmittance spectroscopy and spectral absorbance measurements, they offer compelling advantages, including stronger ethical alignment and reduced cost and complexity.

However, important challenges remain, particularly in the areas of regulatory acceptance, water resistance evaluation and real-world applicability. As the industry considers adopting these methods into mainstream testing strategies, a clear understanding of their scientific foundations and operational requirements becomes essential.

In this webinar, our experts will provide strategic, regulatory and scientific insights to help sunscreen developers, product formulators and testing professionals evaluate the practical use of ISO 23675 and ISO 23698. They will explain testing principles, infrastructure considerations and decision-making criteria for selecting in vitro, hybrid or in vivo approaches, while also exploring broader implications for innovation, sustainability and market readiness.

The session will conclude with a panel discussion featuring experts in both traditional SPF testing and the development of these new methodologies, followed by a live Q&A.

Agenda

• Introduction: a shift toward non-biological endpoints
• ISO 23675:2024 – In Vitro SPF Determination (Double Plate Method)
• ISO 23698:2024 – Hybrid Diffuse Reflectance Spectroscopy (HDRS)
• Testing capabilities and infrastructure
• Opportunities and challenges:
• Regulatory considerations: global recognition status
• When to use in vitro, hybrid or in vivo methods
• Building a robust ‘weight-of-evidence’ SPF dossier
• Implications for innovation, speed to market and sustainability
• Panel discussion and Q&A

Who should attend?

This webinar is ideal for professionals involved in the development, testing, or regulation of sun protection products. It is especially relevant for R&D teams, regulatory affairs professionals, ingredient manufacturers, and product formulators seeking to understand the role of non-erythemal SPF evaluation in the evolving regulatory and commercial landscape.

Register now

This event takes place on September 10, 2025, at 10:00 AM (EDT).