#5 The Serum

#5 The Serum



The Clarity Collection 

Clarity. Balance. Radiance. 

Own it now, pay later

The Story

A potent revival of absolute clarity.

#5 The Serum reactivates one of skin’s most precious natural processes of balance, restoring harmony and revealing radiance anew. 

The Promise

Skin clarity is cultivated.

Tone and texture are refined.

Youthful radiance reawakened.

The Ritual

Smooth gently over face, neck, décolletage and backs of hands each evening. 

Follow with your RATIONALE Essential Six formulations for night. 

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

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The Science

Skin pH is acidified via a synergy of alpha and beta hydroxy acids. Vital skin enzyme and metabolic activity is optimised at an acidic skin pH.