All Formulations

Shop all formulations from RATIONALE. Discover luxurious, transformative offerings for morning and evening skincare routines. Discover your ritual today.

All Serums Hydragels Face Crémes Eye Crémes SPF Cleansers Masks

Frequently Asked Questions

1. What makes RATIONALE skincare different?

Our skincare formulations are built upon the 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. In the morning, skin’s protective barrier function supported by Vitamin-B Complex, multi-vitamin antioxidant defence, and environmental and solar protection offered by Zinc Oxide, Melanin and Iron Oxides.

At night, barrier function replenishment via Ceramides and Lipids, recalibration of skin pH with Hydroxy Acids and peptides, and cellular renewal delivered by Vitamin A, Bakuchiol and DNA Repair Enzymes.

2. How do I choose the right RATIONALE skincare products for my skin?

If you’re new to RATIONALE, we recommend taking our Skin Questionnaire, which prescribes a personalised AM and PM
Ritual based on your skin type, skin concerns, age, and goals. For tailored guidance, we also offer a complimentary virtual consultation, or visit a RATIONALE Flagship for an in-person assessment via our Signature Consultation.

3. What is a RATIONALE skincare ritual?

A RATIONALE Ritual is a curated sequence of formulations
applied each morning and evening. The AM Ritual focuses on protection against solar and environmental damage, while the PM Ritual supports overnight renewal. Formulations are layered in the order of our numbered system, from cleansing through to treatment serums and crèmes.

4. What are Skin Identical Formulations?

Skin Identical formulations contain active ingredients – including Antioxidants, Ceramides, Lipids, Peptides, and Vitamins – that closely mirror the skin's own composition. This compatibility allows
ingredients to be optimally absorbed and delivered into the skin, supporting barrier function and eliciting visible results without compromising sensitivity. This commitment to formulation science is the cornerstone of RATIONALE's evidence-led approach to skincare.

5. Which RATIONALE Collection should I use?

The Essential Six Collections are built upon the six pillars of skin health, defined by key actives. By day, The Strengthening Collection offers Vitamin B Complexes for strengthened barrier function, The Brightening Collection harnesses Vitamin C for antioxidant defence, and The Brilliance Collection utilises Zinc Oxide and antioxidants for SPF protection.

At night, The Nourishing Collection heroes ceramides and lipids for barrier replenishment and fortification, The Refining Collection harnesses Hydroxy Acids and peptides for skin pH refinement and support, and The Rejuvenating Collection is based around Vitamin A and DNA Repair Enzymes for renewed skin turnover.

Ideally, your skincare ritual should support each of these natural functions with a formulation from Essential Six Collection or step.

It’s important to understand your unique skin needs and goals as much as what each collection offers—perhaps even more so. An individual new to actives may only start with a single formulation from one collection or two, in order to best support skin health and build resilience in the immediate term, before slowly introducing other actives (and collections) in time.

For tailored guidance, connect with our Client Services Team who can support your individual goals.

6. Are RATIONALE products suitable for sensitive skin?

Yes. RATIONALE formulations are created in our world-leading laboratory using ingredients designed to support skin barrier
function, while comforting and visibly calming the complexion. The
Strengthening and Nourishing Collections are particularly recommended for skin prone to redness or sensitivity. We suggest introducing active formulations gradually and consulting the Client Services Team or a RATIONALE Skin Therapist for personalised guidance.

7. Where are RATIONALE skincare products made?

All RATIONALE formulations are designed and manufactured in Australia, in our world-leading laboratory in the Macedon
Ranges, Victoria. Each formulation undergoes rigorous clinical testing to ensure efficacy, stability, and sensorial quality. Our Australian heritage and dermatology-led research are central to every formulation we create.

8. How long will it take to see results from RATIONALE skincare

Visible results typically emerge within four to six weeks of consistent use, aligned with the skin's natural renewal cycle.
Hydration and comfort may be noticed sooner, while changes in tone, clarity, and firmness develop over subsequent months. Consistency within your AM and PM Ritual is essential to lasting outcomes.

Every formulation in the RATIONALE range is representative of our protect and repair philosophy. Developed at our world leading research laboratory in Kyneton, Australia, each offering is formulated to work in perfect synchronicity with skin — delivering active ingredients at the concentration, stability, and bioavailability that allows them to be optimally absorbed, high-performing, and delivering real results over time.

The RATIONALE range is built upon the Essential Six — six pillars of skin health, each addressed by its own collection of formulations designed for every skin type.

Morning begins with The Strengthening Collection, which fortifies barrier function and visible resilience through a B-Group Vitamin Complex; The Brightening Collection, which defends against oxidative stress and cultivates a luminous, even complexion through multi-form Vitamin C; and The Brilliance Collection, which provides broad-spectrum SPF protection through Zinc Fusion Technology — the non-negotiable final step of every morning ritual.

Evening shifts toward restoration and renewal. The Nourishing Collection replenishes the Ceramide and Lipid matrix of the skin's barrier, cleansing and nourishing in equal measure. The Refining Collection recalibrates skin pH and refines tone and texture through Hydroxy Acid and Peptide Complexes. And The Rejuvenating Collection completes the ritual with a multi-faceted Vitamin A Complex, botanical actives and DNA Repair Enzymes to visibly firm, renew, and transform overnight.

For Clients who are new to RATIONALE, or those returning to reassess their ritual, our Skin Questionnaire offers a personalised path through the full range — identifying the formulations and collections most suited to your skin type and skin goals.

Alternatively, book a consultation at a RATIONALE Flagship for a curated ritual recommendation guided by expert knowledge of our
full offering.

Skin Questionnaire