#3 The Brilliance Tinted Serum SPF50+
Our most iconic formulation has been upgraded— with a limited-edition gift, exclusively with your 30mL purchase.
Since 1992, RATIONALE has been delivering Luminous Skin for Life. Australian-made,science-led skincare, designed to protect by day and repair by night.
What’s Changed?
One of our bestselling formulations has now been thoughtfully upgraded. Discover the new Brilliance Tinted Serum SPF50+ — enhanced in performance and elevated in packaging, designed to optimise every application.
Our Gift to You
Receive The Brilliance Booster — a limited-edition hydrating concentrate, with your purchase of #3 The Brilliance Tinted Serum SPF50+ 30mL. T+Cs apply.
Our Most-Loved Formulations
From our best-selling serums to our award-winning cleanser, discover our most coveted formulations.
The Discovery Sets
Start your RATIONALE journey — with 10–15% off.
The Protect Daily Duo
Benefits
Hydrates, Nourishes, Evens tone, Enhances radiance, SPF50+ protection,
The Antioxidant Brightening Duo
Benefits
Hydrates, Visibly brightens, Evens tone, Uplifts and firms, Visibly hydrates , Reanimates luminosity,
The Sensitive Skin Trio
Benefits
Gently cleanses, Nourishes, Amplifies suppleness, Visibly calms, Enhances glow, Smooths skin, Hydrates, Visibly firms,
The Repair Nightly Duo
Benefits
Gently cleanses, Nourishes, Amplifies suppleness, Uplifts and firms, Reanimates luminosity, Visibly hydrates ,
The Anti-Ageing Trio (Resilient)
Benefits
Hydrates, Nourishes, Enhances radiance, Restores clarity, Evens tone, Uplifts and firms,
The Anti-Ageing Trio (Sensitive)
Benefits
Hydrates, Nourishes, Enhances radiance, Uplifts and firms, Visibly calms, Enhances glow, Smooths skin,
