Your Results:

According to your results, your skin can comfortably tolerate high-performing active ingredients (Vitamin A, Vitamin C, Hydroxy Acids), and your main concerns seem to be dryness and dehydration.  

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Your Priority Formulations

The perfect formulations to start your journey to combat dryness and dehydration.

Your Priority Formulations

#1 The Strengthening Serum
Bestseller

#1 The Strengthening Serum

From £76.00

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#6 The Rejuvenating Night Crème
Bestseller

#6 The Rejuvenating Night Crème

From £73.00

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An Extended Analysis on your Diagnosis

The skin has three layers: the epidermis (outer layer), dermis (middle), and hypodermis (deepest layer). It naturally loses moisture through a process called Trans-Epidermal Water Loss (TEWL)—where water evaporates from the skin’s surface. The most common causes of moisture loss are a weakened skin barrier, sun and environmental exposure, and using harsh skincare products that strip the natural oils from your skin. These factors can lead to dryness, rough texture, visible flaking, and fine lines.

Concerns in Skin Quiz:

Dryness and dehydration

Skin texture

Fine lines and wrinkles

Dullness and lacklustre complexion

Protect by Day, Repair by Night

After over 30 years of research, RATIONALE has created the Six Pillars of Skin Health—three steps for daytime protection and three for overnight repair. Each step works in harmony with your skin, and with each other to reawaken a healthy glow.

To help prevent and correct the signs of dryness and dehydration, follow your prescribed six-step RATIONALE Ritual.

Your AM Ritual  

Your personalised prescription for resilient skin, designed to combat dryness and dehydration.

Your AM Ritual  

#1 The Strengthening Serum
Bestseller

#1 The Strengthening Serum

From £76.00

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Supports skin barrier defence with a proprietary Complex of B-Group Vitamins, restoring radiance as it amplifies hydration.
#2 The Brightening Light Crème
Bestseller

#2 The Brightening Light Crème

£134.00

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Supports skin barrier defence with a proprietary Complex of B-Group Vitamins, softening as it deeply nourishes.
#3 The Brilliance Tinted Serum SPF50+
Bestseller

#3 The Brilliance Tinted Serum SPF50+

From £78.00

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Protects skin with proprietary Zinc Fusion technology, safeguarding luminosity while imparting a transparent finish.

Your PM Ritual  

Your personalised prescription for resilient skin, designed to combat dryness and dehydration.

Your PM Ritual  

#4 The Nourishing Cleanser
Bestseller

#4 The Nourishing Cleanser

From £53.00

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Restores skin barrier function with Intercellular Lipids and Ceramides, comforting the complexion while removing all traces of the day.
#5 The Milk Concentrate

#5 The Milk Concentrate

£142.00

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#6 The Rejuvenating Night Crème
Bestseller

#6 The Rejuvenating Night Crème

From £73.00

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Supports cellular turnover with a proprietary Complex of Vitamin A, improving the appearance of fines lines and wrinkles while delivery continued hydration.

Unlock Reward Pricing

Bundle selected formulations from your recommended ritual for exclusive, reward pricing. Available with 10% off the RRP of Duos.

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The Protect Daily Duo
10% off

The Protect Daily Duo

£243.90

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Featuring a 30ml #1 The Serum and #3 The Tinted Serum SPF50+, this advanced daytime duo works synergistically to support skin barrier defence with a Complex of B-Group Vitamins, while Zinc Fusion Technology protects skin, imparting a radiant, transparent finish.
The Repair Nightly Duo
10% off

The Repair Nightly Duo

£208.80

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Featuring a 200ml #4 The Cleanser and 50ml #6 The Night Crème, this award-winning evening duo works synergistically to restore skin barrier function with intercellular lipids and ceramides, while a proprietary Complex of Vitamin A (retinol and retinal) supports cellular turnover, improving the appearance of fine lines and wrinkles.