#5 The Serum
#5 The Serum
#5 The Serum
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Step 5: Clarity
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This collection delivers a proprietary a suite of Hydroxy Acids and Peptides to recalibrate the skin’s pH—for a refined, clear complexion.

#5 The Serum

Skin-refining serum for resilient skin.

30ml

$213.00
This advanced serum recalibrates skin's pH balance with a Complex of Hydroxy Acids, evening out skin tone and texture while amplifying radiance.

Use in the PM.

Benefits
Plus
Minus
Restores clarity
Enhances radiance
Evens tone
Targets
Plus
Minus
Blemishes and congestion
Hyperpigmentation
Fine lines and wrinkles
Ingredients
Plus
Minus
Dimethicone, Jojoba Esters, Dimethicone Crosspolymer, Helianthus Annuus (Sunflower) Seed Wax, Methylpropanediol, Olive Oil Decyl Esters, Polyglycerin-3, Tocopherol, Acacia Decurrens Flower Wax, Caprylyl Glycol, Tocotrienols, Helianthus Annuus (Sunflower) Seed Oil, Phenylpropanol, Santalum Spicatum (Sandalwood) Seed Oil, Aqua (Water), Squalene, Octyldodecanol, Elaeis Guineensis (Palm) Oil, Lecithin, Ceteareth-25, Arachidyl Propionate, Glycerin, Cetyl Alcohol, Retinyl Palmitate, Ethyl Linolenate, Behenic Acid, Ceramide NP, Cholesterol, Ceramide NS, Ethyl Linoleate, Ceramide AP, Ceramide EOP, Ceramide EOS, Ethyl Oleate, Caprooyl Phytosphingosine, Caprooyl Sphingosine

Complimentary The HydraCalm Light Crème with orders over $400.

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Discover your prescribed skin ritual.
Dimethicone, Jojoba Esters, Dimethicone Crosspolymer, Helianthus Annuus (Sunflower) Seed Wax, Methylpropanediol, Olive Oil Decyl Esters, Polyglycerin-3, Tocopherol, Acacia Decurrens Flower Wax, Caprylyl Glycol, Tocotrienols, Helianthus Annuus (Sunflower) Seed Oil, Phenylpropanol, Santalum Spicatum (Sandalwood) Seed Oil, Aqua (Water), Squalene, Octyldodecanol, Elaeis Guineensis (Palm) Oil, Lecithin, Ceteareth-25, Arachidyl Propionate, Glycerin, Cetyl Alcohol, Retinyl Palmitate, Ethyl Linolenate, Behenic Acid, Ceramide NP, Cholesterol, Ceramide NS, Ethyl Linoleate, Ceramide AP, Ceramide EOP, Ceramide EOS, Ethyl Oleate, Caprooyl Phytosphingosine, Caprooyl Sphingosine

The Ritual

Dispense 2–3 drops into palm.

Gently smooth over face, neck, décolletage and backs of hands, avoiding the delicate eye area.

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

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The Research

The pH of the skin’s outermost layer, the Stratum Corneum, is vital to complexion health, vitality and beauty.

The ideal state of the Stratum Corneum is acidic, as these conditions maintain the upregulation of enzymes critical to the synthesis of collagen and elastin (skin connective tissues that provide skin structure and firmness), as well as helping to prevent collagen breakdown, sensitivity, breakouts and infection.

Throughout life, skin becomes more alkaline as a result of intrinsic ageing and environmental damage. This leads to an upregulation of enzymes that break down skin connective tissues, leading to premature ageing, wrinkles and sagging.

Recalibrating and maintaining the acidic pH of skin is possible via a nightly regime of topically applied hydroxy acids which help to reverse the effects of facial ageing and environmental damage.

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The Clarity Actives

A Complex of Skin Identical Alpha Hydroxy Acids (including Lactic + Citric Acid) refines skin tone and texture while enhancing skin radiance by encouraging optimal desquamation processes to reveal a clearer, more balanced complexion. By recalibrating skin back to acidic levels, AHAs support cellular renewal and connective tissue synthesis, while amplifying skin firmness and hydration.

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Opposite: ‘Alpha Hydroxy Acids’
Illustration by Jessie Milligan

Ingredients: Rosa Damascena (Rose) Flower Water, Ethoxydiglycol, Aqua (Water), Vaccinium Myrtillus Fruit Extract, Salicylic Acid, Lactic Acid, Saccharum Officinarum (Sugar Cane) Extract, Methylpropanediol, Citrus Aurantium Dulcis (Orange) Fruit Extract, Citrus Limon (Lemon) Fruit Extract, Caprylyl Glycol, Hydroxyethylcellulose, Ethylhexylglycerin, Hectorite, Acer Saccharum (Sugar Maple) Extract, PEG-40 Hydrogenated Castor Oil, Trideceth-9, Phenylpropanol, Santalum Spicatum (Sandalwood) Seed Oil, Glycerin, Citrus Aurantium Dulcis (Orange) Oil, Butylene Glycol, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Citrus Grandis (Grapefruit) Peel Oil, Citrus Limon (Lemon) Peel Oil, Litsea Cubeba Fruit Oil, Citrus Aurantium Bergamia (Bergamot) Leaf Oil, Juniperus Mexicana Oil, Pelargonium Graveolens Oil, Citrus Aurantium Amara (Bitter Orange) Flower Oil, Eugenia Caryophyllus (Clove) Leaf Oil, Propylene Glycol, Pentylene Glycol, Magnesium Aspartate, Zinc Gluconate, Brachychiton Acerifolius Flower Extract, Copper Gluconate, Phenoxyethanol, Glycine, Serine, Glutamic Acid, Banksia Serrata Flower Extract, Citrus Australasica Fruit Extract, Davidsonia Pruriens Fruit Extract, Hibiscus Sabdariffa Flower Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Santalum Acuminatum Fruit Extract, Tasmannia Lanceolata Fruit Extract, Telopea Speciosissima Flower/Leaf Extract, Terminalia Ferdinandiana Fruit Extract, Aspartic Acid, Leucine, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Sodium Benzoate, Citric Acid, Histidine, Potassium Sorbate, Limonene, Citral, Citronellol, Linalool, Geraniol.

The Clarity Actives

Salicylic Acid is a lipid-soluble Beta Hydroxy Acid which enhances skin clarity and texture by decongesting pores and calming irritation and redness.

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Opposite: ‘Alpha Hydroxy Acids’
Illustration by Jessie Milligans.

Ingredients: Rosa Damascena (Rose) Flower Water, Ethoxydiglycol, Aqua (Water), Vaccinium Myrtillus Fruit Extract, Salicylic Acid, Lactic Acid, Saccharum Officinarum (Sugar Cane) Extract, Methylpropanediol, Citrus Aurantium Dulcis (Orange) Fruit Extract, Citrus Limon (Lemon) Fruit Extract, Caprylyl Glycol, Hydroxyethylcellulose, Ethylhexylglycerin, Hectorite, Acer Saccharum (Sugar Maple) Extract, PEG-40 Hydrogenated Castor Oil, Trideceth-9, Phenylpropanol, Santalum Spicatum (Sandalwood) Seed Oil, Glycerin, Citrus Aurantium Dulcis (Orange) Oil, Butylene Glycol, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Citrus Grandis (Grapefruit) Peel Oil, Citrus Limon (Lemon) Peel Oil, Litsea Cubeba Fruit Oil, Citrus Aurantium Bergamia (Bergamot) Leaf Oil, Juniperus Mexicana Oil, Pelargonium Graveolens Oil, Citrus Aurantium Amara (Bitter Orange) Flower Oil, Eugenia Caryophyllus (Clove) Leaf Oil, Propylene Glycol, Pentylene Glycol, Magnesium Aspartate, Zinc Gluconate, Brachychiton Acerifolius Flower Extract, Copper Gluconate, Phenoxyethanol, Glycine, Serine, Glutamic Acid, Banksia Serrata Flower Extract, Citrus Australasica Fruit Extract, Davidsonia Pruriens Fruit Extract, Hibiscus Sabdariffa Flower Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Santalum Acuminatum Fruit Extract, Tasmannia Lanceolata Fruit Extract, Telopea Speciosissima Flower/Leaf Extract, Terminalia Ferdinandiana Fruit Extract, Aspartic Acid, Leucine, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Sodium Benzoate, Citric Acid, Histidine, Potassium Sorbate, Limonene, Citral, Citronellol, Linalool, Geraniol.

The Clarity Actives

Australian Botanicals have the capability to support skin clarity while reducing a feeling of sensitivity.

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Opposite: ‘Alpha Hydroxy Acids’
Illustration by Jessie Milligan

Ingredients: Rosa Damascena (Rose) Flower Water, Ethoxydiglycol, Aqua (Water), Vaccinium Myrtillus Fruit Extract, Salicylic Acid, Lactic Acid, Saccharum Officinarum (Sugar Cane) Extract, Methylpropanediol, Citrus Aurantium Dulcis (Orange) Fruit Extract, Citrus Limon (Lemon) Fruit Extract, Caprylyl Glycol, Hydroxyethylcellulose, Ethylhexylglycerin, Hectorite, Acer Saccharum (Sugar Maple) Extract, PEG-40 Hydrogenated Castor Oil, Trideceth-9, Phenylpropanol, Santalum Spicatum (Sandalwood) Seed Oil, Glycerin, Citrus Aurantium Dulcis (Orange) Oil, Butylene Glycol, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Citrus Grandis (Grapefruit) Peel Oil, Citrus Limon (Lemon) Peel Oil, Litsea Cubeba Fruit Oil, Citrus Aurantium Bergamia (Bergamot) Leaf Oil, Juniperus Mexicana Oil, Pelargonium Graveolens Oil, Citrus Aurantium Amara (Bitter Orange) Flower Oil, Eugenia Caryophyllus (Clove) Leaf Oil, Propylene Glycol, Pentylene Glycol, Magnesium Aspartate, Zinc Gluconate, Brachychiton Acerifolius Flower Extract, Copper Gluconate, Phenoxyethanol, Glycine, Serine, Glutamic Acid, Banksia Serrata Flower Extract, Citrus Australasica Fruit Extract, Davidsonia Pruriens Fruit Extract, Hibiscus Sabdariffa Flower Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Santalum Acuminatum Fruit Extract, Tasmannia Lanceolata Fruit Extract, Telopea Speciosissima Flower/Leaf Extract, Terminalia Ferdinandiana Fruit Extract, Aspartic Acid, Leucine, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Sodium Benzoate, Citric Acid, Histidine, Potassium Sorbate, Limonene, Citral, Citronellol, Linalool, Geraniol.

Skin Questionnaire