Arrived here from Montauk? Glowing skin awaits…
You are moments away from discovering RATIONALE’s cult-favourite: #3 The Tinted Serum Broad Spectrum SPF50+. This award-winning innovation delivers an illuminating daytime serum, with daily protection powered by Australian solar science. No white cast. No weight. Just luminous, even-toned skin—and the daily assurance of polished SPF50+ protection. It was also awarded Best Serum Sunscreen at the 2024 Oprah Daily O-Wards and 2025 Oprah Daily Editor's Choice Award.
A Serum. An Illuminator. A Glow Booster.
#3 The Tinted Serum Broad Spectrum SPF50+ isn’t just protection—it’s transformation. This high-performance formula offers SPF50+ protection with a sheer, universal tint that enhances every complexion. Infused with Zinc Fusion Technology, it calms and shields skin from UVA, UVB, visible light, and pollution.
More than just sun care, this hydrating serum delivers a radiant finish that boosts glow while supporting skin health.
“I know that using SPF made in Australia is going to be the best of the best, and it will give me and my clients the sun protection we need. The gorgeous tint literally melts into the skin and offers the most beautiful glow. It’s super hydrating while evening out skin tone—not to mention the illuminating sheen! And, I have never had so many compliments on my skin.”
— Georgie Eisdell, Celebrity Makeup Artist to Gwyneth Paltrow, Jennifer Aniston, Dakota Johnson and Jennifer Lawrence.
Your Glow, Delivered
Our award-winning SPF serum is available online with complimentary US shipping. Whether you're restocking or discovering for the first time, your summer glow starts now.
#3 The Tinted Serum Broad Spectrum SPF 50+
Superlative protective serum for all skin types.