A dermal therapist's hand holding the Professional Advanced Rationale range. She applies the Rationale H.A. mask on the patient's face who is enjoying our signature Rationale Facial. A dermal therapist's hand holding the Professional Advanced Rationale range. She applies the Rationale H.A. mask on the patient's face who is enjoying our signature Rationale Facial.
Curated Facials

RATIONALE Signature Facial

Brighten, Lift & Rejuvenate

Exclusive to Le Petit Saint and created in collaboration with Dr Joseph Hkeik, this luxurious 90-minute facial is the ultimate radiance-inducing treatment for all skin types, and uses advanced professional-grade RATIONALE skincare and technology. A powerful complex of Vitamin C is infused into the skin to brighten tone, while an Enzyme Reactivation Complex reawakens skin’s inherent glow by gently resurfacing texture and amplifying hydration. Essential Vitamins are delivered through lymphatic drainage techniques to boost circulation, while Microcurrent gloves lift, tone and tighten the skin to reveal a more defined profile. This facial concludes with Dermalux LED Light Therapy for a brilliant, long-lasting glow.

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A sophisticated, glow-inducing treatment that embodies the very essence of radiance renewal. The RATIONALE Signature Facial combines advanced formulations with expertly delivered techniques to restore clarity, luminosity, and firmness. A potent infusion of Vitamin C energises the complexion and refines uneven tone, while an Enzyme Reactivation Complex gently resurfaces the skin to reveal refined texture and heightened hydration.

Lymphatic drainage techniques promote circulation and detoxification, allowing essential vitamins to penetrate more deeply and revitalise the skin from within. Micro-current technology then lifts and sculpts the facial contours, enhancing definition and tone. The ritual concludes with LED Light Therapy, amplifying collagen activity and creating a luminous, long-lasting glow that feels both polished and profoundly rejuvenated.

Face

Smoother texture, increased hydration, lifted contours, and a radiant complexion.

Skin may feel warm, lightly flushed, or exceptionally smooth following treatment. Avoid heat exposure, vigorous exercise, and active skincare for 24 hours to protect the barrier and maintain results. Keep the skin hydrated and shielded with SPF, and minimise makeup until the next day for the most radiant finish. As this treatment involves no downtime, it is ideal before events—while regular sessions help sustain long-term clarity, brightness, and firmness.