Safety by design: Evaluating the toxicological safety of a complete beauty routine
As beauty brands increasingly develop complete skincare and personal care regimens, ensuring the safety of individual products is no longer enough. Consumers combine multiple products every day, such as cleansers, serums, eye care products, moisturizers, sunscreens, makeup, and more, often applying them sequentially to the same area of the body. This reality is driving growing interest in routine-level toxicological safety assessments.
Unlike traditional product-by-product evaluations, beauty routine assessments consider the cumulative exposure generated when several products are used together as intended by the brand. To ensure scientific relevance, the routine must be clearly defined, with a precise sequence of application and identified products. This avoids multiple usage scenarios and enables toxicologists to evaluate exposure under realistic consumer conditions.
A robust assessment ideally relies on a consumer-use scenario reflecting the complete routine, enabling the evaluation of all products applied successively to the skin. Particular attention is given to ingredients that may be present across several formulations, as repeated exposure can increase the overall ingredient load and influence safety margins.
Fragrance materials are an especially important consideration. Access to detailed fragrance composition data, including allergen information, is essential to assess the potential cumulative exposure resulting from the use of multiple fragranced products within the same routine. This approach helps determine whether repeated application on the same skin area could increase the risk of skin sensitisation or allergic reactions.
At Eurofins Cosmetics & Personal Care, our toxicology experts support brands in evaluating complete beauty routines through a science-based approach combining formulation review, exposure assessment, ingredient toxicology, and cumulative risk evaluation. By considering the consumer journey as a whole rather than individual products in isolation, brands can strengthen safety substantiation, support innovation, and build greater confidence in their product portfolios.
As beauty brands increasingly move toward complete, multi-step skincare rituals, routine-based toxicological assessment provides a valuable tool for ensuring consumer safety under real-life conditions of use. By considering cumulative exposure across products, ingredient interactions, and fragrance allergen profiles, brands can strengthen safety substantiation, support innovation, and enhance consumer confidence in their product ecosystems.