Rationale

RATIONALE skincare brings over 30 years of Australian dermatological science to your daily ritual - serums, SPF50+, crèmes, and cleansers engineered to protect skin by...

RATIONALE skincare brings over 30 years of Australian dermatological science to your daily ritual - serums, SPF50+, crèmes, and cleansers engineered to protect skin by day and repair it by night. Shop from Exclusive Beauty Club with free shipping on orders $50+ and free samples with every order.

RATIONALE skincare brings over 30 years of Australian dermatological science to your daily ritual - serums, SPF50+, crèmes, and cleansers engineered to protect skin by day and repair it by night. Shop from Exclusive Beauty Club with free shipping on orders $50+ and free samples with every order.

1.0 fl. oz.
Rationale #1 The Serum
A barrier-strengthening serum powered by Vitamin B Complex to visibly calm redness, support hydration, and restore skin resilience. RATIONALE #1 The Serum is a lightweight daily treatment serum formulated to strengthen the skin barrier, calm visible redness, and deeply hydrate combination and sensitive skin types....

$125.00

$125.00

Unit price

per

-
1.0 fl. oz.
Rationale #2 The Serum
A powerful antioxidant serum formulated with Vitamin C, Vitamin A, and skin-strengthening antioxidants to visibly brighten, firm, and restore radiance. RATIONALE #2 The Serum is a potent daily antioxidant treatment designed to defend against oxidative stress while visibly improving brightness, firmness, hydration, and overall skin vitality....

$124.00

$124.00

Unit price

per

-
1.0 fl. oz.
Rationale #3 The Brilliance Tinted Serum Broad Spectrum SPF50+
An illuminating mineral SPF serum that delivers advanced environmental protection while visibly brightening, hydrating, and evening the look of skin. RATIONALE #3 The Brilliance Tinted Serum SPF50+ is a luxurious daily mineral sunscreen serum formulated with 24.5% zinc oxide, iron oxides, melanin, peptides, and...

$124.00

$124.00

Unit price

per

-
0.7 fl. oz.
Rationale #4 The Eye Creme
A peptide-powered eye crème that visibly brightens, firms, and smooths the delicate under-eye area while delivering lasting hydration. RATIONALE #4 The Eye Crème is a luxurious multi-corrective eye treatment formulated to visibly reduce puffiness, dark circles, fine lines, and dehydration around the orbital area. Powered by...

$120.00

$120.00

Unit price

per

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About RATIONALE Skincare

RATIONALE was founded in Melbourne in 1992 by cosmetic chemist Richard Parker — a scientist who spent his career studying what most brands ignore: the sun is responsible for up to 80% of visible facial aging. Every formula in the RATIONALE range is built to address that directly, using Skin Identical technology that matches active ingredients to the skin's own biology rather than chasing cosmetic trends.

The brand's research is backed by peer-reviewed epigenetic science and supported by a minority investment from Amorepacific, Korea's leading beauty conglomerate — reflecting the global scientific community's recognition of RATIONALE's authority in skin health.

The Essential Six: What Each Product Does

Every RATIONALE product belongs to one of six science-led collections, each targeting a specific pillar of skin health:

#1 Barrier Strengthening — Niacinamide and Vitamin B Complex to calm redness and build resilience
#2 Antioxidant Brightening — Vitamin C, Vitamin E, and Retinol to defend against oxidative stress and uneven tone
#3 Solar Protection — Zinc Fusion Technology SPF50+ in a weightless, luminous tinted serum (non-comedogenic, no white cast)
#4 Barrier Repair — Ceramide Complex cleansers, eye crèmes, and moisturizers for deep hydration and comfort
#5 Skin Refinement — AHA/BHA Hydroxy Acids and Peptides to recalibrate pH, smooth texture, and restore clarity
#6 Overnight Renewal — Retinol, Retinal, and Bakuchiol in a night crème that visibly firms and renews skin while you sleep

Not sure where to begin? Most skin types do well starting with #1 The Serum (barrier support) and #3 The Brilliance Tinted Serum SPF50+ (daily solar protection). Browse our skincare routine guide or explore our full serum collection to compare active ingredients across brands.

Is Exclusive Beauty Club an authorized Rationale retailer?

Exclusive Beauty Club is an authorized retailer of every brand it carries, so the Rationale products bought here are genuine. You can check our status on our authorized dealer page. We guarantee the authenticity of every item we ship.

What is the Rationale skincare brand known for?

Rationale is known for bringing over 30 years of Australian dermatological science to your daily regimen. Their formulations include targeted serums, high-protection SPF50+, and restorative crèmes. It's science-backed care for your skin.

How do you choose between Rationale serums and crèmes?

You should select your Rationale products based on whether you want to protect your skin during the day or focus on nighttime repair. Their range features specialized options like #1 or #2 serums for your daily needs and rich options like face serum formulas. Choose the texture that fits your routine best.

Which Rationale products are best for the delicate skin around the eyes?

The brand offers targeted options like Rationale #4 The Eye Creme to nourish and improve the appearance of the eye area. If you are looking for additional ways to support this area, you can also explore our eye creams selection. These products are specifically engineered for that sensitive skin.