Your Recipe for Radiance

Feed your skin each morning with its daily dose of topical skin nutrition, for a stronger, brighter, more protected complexion.


Since 1992, RATIONALE has delivered Luminous Skin for Life with their luxurious suite of formulations and treatment experiences that enlighten and transform.

Founded by Richard Parker, who devoted himself to years of dermatological research after having experienced frustrations with his own skin from a young age, RATIONALE is compelled to develop world-leading formulations that protect from and repair the effects of solar and environmental damage on the skin, restoring skin’s natural vitality, resilience and radiance.

Created with revolutionary Skin Identical technology, RATIONALE formulations work synergistically with skin—and with each other—to deliver the perfect combination of active ingredients at the correct concentrations.

RATIONALE also offers a suite of transformative Facial Treatments, based around an innovative professional range of Skin Identical formulations, and performed using state-of-the-art treatment technologies for elevated results.

About Essential Six

The cornerstone of the RATIONALE range is the Essential Six—a system built around the six pillars of skin health and luminosity, and acknowledged worldwide as the definitive skincare routine for the prevention and treatment of skin ageing.

Tailored to every individual’s skin, an Essential Six prescription acts as the skin’s daily nutrition, providing all the Immune Boosters, Antioxidants, Environmental Protection, Barrier Fortification, pH Recalibration and DNA Repair needed for skin to glow with radiant health.

By day, the Essential Six ritual offers the world’s most comprehensive defence against the entire Solar Constant—made up of ultraviolet, visible light and infrared radiation—as well as against pollution and other environmental aggressors.

By night, the Essential Six evening routine works to repair and reverse daytime damage by replenishing the skin’s lipid barrier and recalibrating skin’s pH to a healthy, acidic level. DNA repair processes are reactivated to support overnight repair and cellular regeneration for a visibly more luminous complexion by morning.

How to Get Started with RATIONALE

A comprehensive Skin Consultation is the essential first step in any RATIONALE journey, and the very best investment you can make in your skin’s future.

Including Skin Scanning touch analysis under magnification light and UV Diagnostic Imaging, a Skin Consultation will reveal the health of every layer of your skin. Empowered with a thorough understanding of your skin’s needs, your Skin Consultant will then tailor a personalised skincare prescription and treatment plan.

Your RATIONALE Essential Six prescription draws on world-leading, Australian solar skincare research to deliver everything you need to protect from and repair environmental damage of every kind, and maintain healthy, Luminous Skin for Life.

Purchasing RATIONALE

RATIONALE is available to purchase at Port Macquarie Dermatology, or exclusively Online at www.rationale.com. When purchasing online, remember to enter our unique Doctor Code, 14203-RA10, upon checkout.