#3 The Tinted Serum SPF50+

$204.00

Superlative Protective Serum 30ml

This hydrating daily SPF50+ serum protects skin with proprietary Zinc Fusion technology, safeguarding luminosity while imparting a transparent finish.

Suitable for all skin types.

Superlative Protective Serum 30ml

This hydrating daily SPF50+ serum protects skin with proprietary Zinc Fusion technology, safeguarding luminosity while imparting a transparent finish.

Suitable for all skin types.

The Results

At RATIONALE, we’re pleased to report the proportion of participants who observed the following improvements in their skin after use of #3 The Tinted Serum* :


80% reported ↑ Skin beauty
75% reported ↑ Radiance and brightness
75% reported ↑ Even tone

*Based on a 28-day trial with 20 participants

The Ritual

Shake well to activate formula.

Dispense a generous amount into palm.

Blend well over face, neck, décolletage and backs of hands for even coverage each morning.

Reapply throughout the day as needed.

To discover how to introduce this formulation into your RATIONALE Ritual, connect with our Team of Online Skin Consultants.

The Research

Long have we studied the profound interactions of human skin, sunlight and metallic oxides including Zinc. Found in abundance throughout the human body, Zinc is vital to the health of every cell. Beyond delivering radiant skin and cellular nutrition, topical Zinc Oxide forms a protective shield against sunlight and environmental aggressors. But we’ve gone much deeper with Zinc…

Marking a new paradigm in multifaceted skincare, #3 The Tinted Serum SPF50+ boasts an entirely unique and innovative complex of Zinc Oxide—a powerhouse antioxidant and environmental protector. Our proprietary array of Zinc particle profiles delivers a radiant, translucent finish with comprehensive solar protection benefits, filtering UV, Visible Light (VL) and Infrared Radiation (IR). We call this The Solar Constant.