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Rationale

#5 The Serum

Regular price
$194.00
Regular price
Sale price
$194.00
Shipping calculated at checkout.
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Rationale’s #5 The Serum is an advanced formula designed to recalibrate the skin’s pH balance, refine texture, and even skin tone. By combining a complex of Hydroxy Acids, it boosts radiance while reducing the appearance of fine lines and uneven pigmentation. Perfect for those seeking smooth, luminous skin, this serum enhances overall clarity and firmness.

 

My Benefits
  • Refines skin texture for a smoother appearance
  • Evens out skin tone and reduces pigmentation
  • Boosts radiance and enhances brightness
  • Gently exfoliates, revealing fresh skin
  • Helps firm and strengthen the skin
skin Suitability
  • Suitable for all skin types
  • Ideal for those with uneven skin tone and texture concerns
How to use me

Shake the bottle gently before use. Dispense 2–3 drops into your palm and smooth over the face, neck, décolletage, and backs of hands. Avoid the delicate eye area. Use in the morning as part of your AM skincare routine

My Key Ingredients
  • Salicylic Acid: Exfoliates the skin by unclogging pores, improving texture, and reducing inflammation.
  • Lactic Acid: A gentle exfoliant that also hydrates and smooths the skin.
  • Saccharum Officinarum (Sugar Cane) Extract: A natural exfoliant and humectant that helps retain moisture while enhancing cell renewal.
  • Tea Tree Leaf Extract: Provides antimicrobial benefits, calming irritated skin.

Sandalwood Seed Oil: Nourishes and soothes the skin, helping to improve overall

All of My Ingredients

Aqua (Water), Ethoxydiglycol, Vaccinium Myrtillus Fruit Extract, Dimethyl Isosorbide, Salicylic Acid, Lactic Acid, Saccharum Officinarum (Sugar Cane) Extract, Glycerin, Citrus Aurantium Dulcis (Orange) Fruit Extract, Citrus Limon (Lemon) Fruit Extract, Sodium Levulinate, Acer Saccharum (Sugar Maple) Extract, Diutan Gum, Melaleuca Alternifolia (Tea Tree) Leaf, Sodium Anisate, Mentha Australis Leaf Extract, Butylene Glycol, Santalum Spicatum (Sandalwood) Seed Oil, Magnesium Aspartate, Zinc Gluconate, Sodium Benzoate, Citric Acid, Copper Gluconate, Glycine, Serine, and more​

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    The 'YOU' Guarantee

    • Quality

      Medical-grade, science-backed skincare solutions.

    • Doctor-Led

      Expert care from trusted professionals.

    • Fast Shipping

      Fast, reliable delivery to your doorstep.

    • Support

      Friendly, dedicated customer care team.

    FAQs

    Do you offer flexible payment options?

    Yes! We accept Afterpay, Zippay, TLC finance, Visa, Mastercard, and cash in-clinic for easy and secure payments.

    How can I receive my order?

    We deliver Australia-wide and internationally, plus offer free local pickup at our Forresters Beach and Newcastle locations.

    How long does shipping take?

    Standard shipping within Australia typically takes 2–5 business days, and express delivery takes 1–3 business days, depending on your delivery location​.

    What if I don't know which products I need?

    Try our online Skin Quiz! It’s a quick and easy way to discover products tailored to your skin type and concerns.