Endorsed by dermatologists and skin professionals for over three decades, Rationale holds cult status in Australia and is now available in the United States through select luxury retailers and leading skin clinics. The brand’s high-performing formulations and facial treatments are renowned for delivering visible, transformative results through advanced dermatological innovation.
Born under one of the world’s harshest UV environments, Rationale’s philosophy champions solar protection by day and repair by night. Developed and manufactured in the brand’s laboratory in Australia, each formulation is meticulously engineered to defend skin against the cumulative effects of solar and environmental damage while restoring clarity, resilience and luminosity.
This philosophy is expressed through The Essential Six, Rationale’s complete daily skin care ritual designed to protect the skin during the day and renew it overnight. Working synergistically, the six formulations deliver the skin’s essential nutrients at optimal concentrations to support barrier strength, refine texture and promote lasting radiance.
At the heart of the morning ritual is #3 The Tinted Serum SPF50+, an award-winning formulation that combines advanced solar protection with sheer, luminous coverage. Recently honored with the Oprah Daily Sun O-Ward and Editors’ Choice Award for Best Sunscreen, the serum reflects Rationale’s commitment to intelligent UV defense and elegant, skin-enhancing performance.
Powered by award-winning formulas and clinically proven results, Rationale continues to deliver profound skin health and radiance, offering a sophisticated approach to skin care designed to achieve luminous skin for life.
Discover the collection at us.rationale.com.