Australian Luxury Skincare
For over 30 years, RATIONALE has delivered our signature glow with a luxurious suite of skincare formulations and facial treatments. Founded in 1992 by Cosmetic Chemist Richard Parker, RATIONALE combines dermatological and solar research with Skin Identical technology to deliver unparalleled environmental skin protection by day and radiant repair by night.
Proudly Australian Made
RATIONALE HQ is home to our world-class research laboratory and production facilities—where we develop, formulate, and manufacture our formulations in-house, ensuring our exacting standards of quality are met at every touchpoint.

Protect by Day, Repair by Night
The RATIONALE Difference
Based on our unique and profound understanding of skin anatomy and physiology, we have identified six pillars of skin health: a system of three collections for daytime protection, followed by three for overnight repair, providing all of the skin’s daily nutrients at the correct concentrations.

Over 30 Years of Research
As Australian Skincare Scientists, we have more than three decades of experience dealing with the devastating effects of the sun. And more specifically, the knowledge that 80% of facial ageing is caused by the sun. Paired with leading dermatological and epigenetic investigation, our Research faculty continues to redefine the realm of skincare science, conducting studies with field experts, facilitating research projects, and publishing our findings in industry journals.
Led by Founder and Director of Research, Richard Parker, our industry-leading research and innovation discipline ensures our pioneering skincare formulations and treatments, and initiates robust testing and trial of our complete formulations—and not just the key actives—to continue to set a new benchmark in skincare excellence.

A Global Network of
Skin Support, for Life
Experience superior guidance, care and knowledge every step of the way. From an expansive portfolio of dedicated online Client Services Team, and the expertise of medical and dermal professionals within our Agency channel, our network is available to support you with consultations, treatments, skin reviews, and referrals from the beginning of your skincare journey, through every age and life stage.