#3 The Brilliance Collection

This collection delivers a proprietary Complex of Zinc Fusion Technology, Iron Oxides, and Melanin to offer superlative protection.

Bestseller

#3 The Brilliance Tinted Serum Broad Spectrum SPF50+

(Formerly #3 The Tinted Serum Broad Spectrum SPF50+)

An illuminating and protective serum for all skin types.

0.5 fl. oz.1.0 fl. oz.

From $72.00

Suited to

["All skin"]

10% off

The Protect Daily Duo

Strengthening and Protective Set

$224.10 $249.00

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Frequently Asked Questions

What is The Brilliance Collection?

The Brilliance Collection is the third of our daytime essential collections, offering skin nourishment and solar and environmental protection, inspired by Zinc Fusion Technology. Each formulation combines Zinc Oxide with Iron Oxides, Melanin, and antioxidant Multi-Vitamin Complexes to defend against UVA, UVB, blue light, and environmental aggressors. The Brilliance Collection is the final and non-negotiable step in every RATIONALE daytime ritual.

What is Zinc Fusion Technology?

Zinc Fusion Technology is RATIONALE's proprietary system for delivering elegant, broad-spectrum sun protection. It blends Zinc Oxide — a mineral filter that physically reflects UV radiation — with Iron Oxides for visible light defence, alongside antioxidants that neutralise free radicals. The result is a luminous, weightless finish that protects without the white cast traditionally associated with mineral SPF formulations.

What is the difference between SPF15 and SPF50+ formulations?

SPF15 offers daily protection suitable for low UV environments or indoor-led routines, while SPF50+ delivers maximum broad-spectrum defence recommended for outdoor exposure, the Australian climate, and skin actively addressing pigmentation. For most clients, we recommend #3 The Brilliance Tinted Serum SPF50+ as the standard daily formulation, with #3 The Brilliance Enriched Crème SPF15 as a hydrating complement.

Why are Iron Oxides included in Brilliance formulations?

Iron Oxides offer visible light protection, particularly against blue light from screens and high-energy visible light, which has been shown to contribute to pigmentation and oxidative stress. Their inclusion also delivers a luminous tinted finish that adapts to a range of skin tones, providing both complexion-perfecting and protective benefits in one formulation.

Is Zinc Oxide better than chemical sunscreens?

Zinc Oxide is a mineral filter that sits on the skin's surface and physically reflects UV radiation, rather than absorbing it. It is generally considered well tolerated by sensitive skin and offers immediate broad-spectrum protection on application. RATIONALE has chosen Zinc Fusion Technology as the foundation of our Brilliance Collection for its efficacy, calming properties, and elegant sensorial finish.

Can I wear Brilliance formulations under makeup?

Yes. The Brilliance Collection is formulated to layer beautifully beneath cosmetics, with #3 The Brilliance Tinted Serum SPF50+ also serving as a luminous tinted base. For seamless integration with makeup, allow the formulation to settle for one to two minutes before applying additional products. The Beautiful Collection offers complementary SPF colour formulations created to layer over Brilliance.

The most consequential step in any morning ritual is the one that completes it: daily broad-spectrum photoprotection. Solar and environmental damage is the primary driver of visible skin ageing, uneven tone, and the deepening of hyperpigmentation, accumulating every day, whether the sun is visible or not. The Brilliance Collection exists to make that final, essential step one that is transformative and supportive for the complexion, as it is protective.

RATIONALE's proprietary Zinc Fusion Technology inspires the formulations found in this collection; a Zinc Oxide matrix that delivers a calmer, more even appearance, while imparting broad-spectrum protection against UV, visible, and infrared light. The third step of the Essential Six Ritual, the Brilliance Collection is designed to be used every day, by every skin type, without exception.

#3 The Brilliance Tinted Serum SPF50+ is a truly groundbreaking formulation for RATIONALE and the cornerstone of the collection—a lightweight tinted serum that illuminates skin with a visibly perfected finish, shields against solar and environmental aggressors, and incorporates a Solar Repair Complex with encapsulated DNA Repair Enzymes to address environmental damage throughout the day. For combination skin types who prefer richer coverage with added nourishment, #3 The Enriched Crème SPF15 offers daily broad spectrum protection in a deeply hydrating texture suited to drier complexions.

To find the formulation best suited to your skin, book a consultation with a RATIONALE team membe or take our Skin Questionnaire.

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