
Rationale #1 Serum
Rationale
INGREDIENTS
PRODUCT OVERVIEW
Quick product notes
(Click on icon for more information)
Quick product notes serve as a convenient method to determine if a product aligns with the preferences of skincare enthusiasts by being free from commonly avoided ingredients. These preferences arise due to various factors, including personal experiences, sensitivities, health considerations, and more.
Paraben free
Sulfate free
Alcohol free
Silicone free
Fungal Acne Safe
EU Allergent Free
Key Ingredients
Have you ever tried a product that promised certain effects but delivered nothing? It might have lacked key ingredients necessary for those promised results. Despite marketing claims, if a product lacks beneficial components, its efficacy is questionable.
We help you identify key ingredients known for effects such as acne-fighting, brightening, UV protection, and anti-aging, assisting you in making smarter skincare choices. Keep in mind that the effectiveness of key ingredients can vary; while some are well-proven, others have mixed research behind them.
Anti Aging from (8) Ingredient:
Promotes Wound Healing from (1) Ingredient:
Brightening from (2) Ingredient:
Ingredients Related to Skin Types
Click the arrows next to Skin Type! Green = Good & Red = Bad
Products can be great for some and terrible for others due to different skin types and reactions to ingredients. We've identified ingredients suitable for dry, oily, and sensitive skin types.

Dry skin

Oily Skin

Sensitive skin

Oil skin
Ingredient Safety Breakdown (EWG Health Ratings)
The Ingredient Safety Breakdown indicates the percentage of ingredients categorized into different risk levels, as classified by the EWG (Environmental Working Group) when available. With numerous cosmetic ingredients in existence, the EWG is one of the few organizations globally that assigns ratings to many commonly used ingredients, making it a valuable reference point.
Low risk
Moderate risk
High risk
Unknown
INGREDIENT LIST
(Display the first 5 ingredients from a list of 97 ingredient)
EWG | CIR | Ingredient name & cosmetic function | Notes |
---|---|---|---|
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Rosa Damascena (Rose) Flower Water (Skin Conditioning, Masking, Skin Protecting) |
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A
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Niacinamide (Hair Conditioning, Skin Conditioning, Smoothing) |
![]() Anti Aging
![]() Brightening
|
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A
|
Glycerin (Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant ) |
![]() Good for dry skin
|
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A
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Pentylene Glycol (Solvent, Skin Conditioning) |
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Aloe Barbadensis (Aloe Vera) Leaf Juice |
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Methylpropanediol (Solvent) |
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Water (Solvent) |
|
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B
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Coco Caprylate/ Caprate (Skin Conditioning, Emollient) |
|
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B
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Glyceryl Stearate Citrate (Skin Conditioning, Emollient, Emulsifying) |
![]() Fungal Acne Trigger
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A
|
Cetearyl Alcohol (Opacifying, Emollient, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Emulsifying, Foam Boosting, Viscosity Increasingagent - Aqueous) |
|
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A
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Caprylyl Glycol (Humectant, Hair Conditioning, Skin Conditioning, Emollient) |
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Olive Oil Decyl Esters (Refatting) |
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A
|
Xanthan Gum (Skin Conditioning, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Binding Agent, Binding, Surfactant - Emulsifying Agent, Gel Forming) |
|
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B
|
Peg 40 Hydrogenated Castor Oil (Perfuming, Fragrance, Emulsifying, Surfactant) |
![]() Fungal Acne Trigger
|
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B
|
Trideceth 9 (Surfactant, Emulsifying) |
|
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A
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Hydrogenated Lecithin (Skin Conditioning, Emulsifying, Surfactant, Suspending Agent- Nonsurfactant) |
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A
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Cetyl Alcohol (Masking, Fragrance, Opacifying, Emollient, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Emulsifying, Foam Boosting, Surfactant) |
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Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer (Viscosity Controlling, Emulsion Stabilising) |
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Phenylpropanol (Solvent, Masking, Perfuming) |
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Santalum Spicatum (Sandalwood) Seed Oil |
|
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B
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Sodium Hydroxide (Denaturant , pH adjusting agent, pH adjusting agent) |
|
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Citrus Aurantium Dulcis (Orange) Oil |
![]() Bad for sensitive skin
|
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A
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Disodium Edta (Chelating Agent, Viscosity Controlling) |
|
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B
|
Propylene Glycol (Solvent, Fragrance, Humectant, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling, Skin-Conditioningagent - Miscellaneous) |
![]() Good for dry skin
|
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A
|
Glyceryl Caprylate (Skin Conditioning, Emollient, Emulsifying, Surfactant) |
|
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A
|
Squalene (Skin Conditioning, Emollient, Antistatic Agent, Hair Conditioning, Refatting) |
![]() Fungal Acne Trigger
|
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A
|
Butylene Glycol (Solvent, Masking, Fragrance, Humectant, Skin Conditioning, Viscosity Controlling, Viscosity decreasing agents) |
![]() Good for dry skin
|
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Citrus Aurantium Bergamia (Bergamot) Fruit Oil (Masking, Fragrance) |
|
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B
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Citrus Grandis (Grapefruit) Peel Oil (Masking, Fragrance, Skin Conditioning) |
|
![]() ![]() |
B
|
Citrus Limon (Lemon) Peel Oil |
![]() Bad for sensitive skin
|
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Litsea Cubeba Fruit Oil (Masking, Perfuming, Tonic) |
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Citrus Aurantium Bergamia (Bergamot) Leaf Oil (Cosmetic Astringent) |
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Juniperus Mexicana Oil (Masking, Fragrance) |
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Pelargonium Graveolens Oil (Masking, Perfuming) |
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Adenosine Triphosphate (Skin Conditioning) |
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A
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Collagen Amino Acids (Skin Conditioning, Hair Conditioning, Moisturising) |
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Citrus Aurantium Amara (Bitter Orange) Flower Oil |
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Eugenia Caryophyllus (Clove) Leaf Oil (Masking, Fragrance) |
|
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A
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Sodium Hyaluronate (Humectant, Skin Conditioning) |
![]() Good for dry skin
![]() Promotes Wound Healing
|
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Ascorbyl Glucoside (Antioxidant) |
![]() Brightening
|
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B
|
Polysorbate 60 (Emulsifying, Surfactant) |
![]() Fungal Acne Trigger
|
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A
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Sorbitan Isostearate (Emulsifying, Surfactant) |
![]() Fungal Acne Trigger
|
![]() ![]() |
A
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Citric Acid (Masking, Fragrance, Chelating Agent, pH adjusting agent, pH adjusting agent) |
![]() Anti Aging
![]() Bad for sensitive skin
|
![]() ![]() |
B
|
Ceteareth 25 (Surfactant, Emulsifying, Cleansing) |
|
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A
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Potassium Sorbate (Fragrance, Preservative) |
|
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A
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Magnesium Aspartate (Skin Conditioning) |
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Zinc Gluconate (Deodorant, Skin Conditioning, Cosmetic Biocide) |
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Brachychiton Acerifolius Flower Extract (Skin Conditioning, Hair Conditioning, Antioxidant) |
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![]() ![]() |
A
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Sodium Benzoate (Masking, Fragrance, Preservative, Anticorrosive) |
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Leuconostoc/Radish Root Ferment Filtrate (Antimicrobial, Antidandruff Agent) |
|
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A
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Phospholipids (Skin Conditioning) |
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A
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Phenoxyethanol (Fragrance, Preservative) |
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Glycosphingolipids (Skin Conditioning, Emollient) |
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Behenic Acid (Emulsifying, Opacifying) |
![]() Fungal Acne Trigger
|
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A
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Calcium Gluconate (Humectant, Skin Conditioning) |
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Ceramide 3 (Hair Conditioning, Skin Conditioning) |
![]() Anti Aging
|
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A
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Cholesterol (Skin Conditioning, Emollient, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Emulsifying, Stabilising) |
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Copper Gluconate (Skin Protecting, Skin Conditioning) |
|
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A
|
Ethylhexylglycerin (Deodorant, Skin Conditioning) |
|
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A
|
Ceramide 2 (Hair Conditioning, Skin Conditioning) |
![]() Anti Aging
|
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A
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Glycine (Fragrance, Hair Conditioning, pH adjusting agent, Skin Conditioning, Antistatic Agent, Skin-Conditioning Agent -Miscellaneous) |
|
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Tocopherol |
![]() Good for dry skin
![]() Anti Aging
|
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A
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Serine (Masking, Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
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A
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Glutamic Acid (Fragrance, Humectant, Hair Conditioning, Antistatic Agent) |
|
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A
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Ceramide Ap (Hair Conditioning, Skin Conditioning) |
![]() Anti Aging
|
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Ceramide 9 (Skin Conditioning, Hair Conditioning) |
![]() Anti Aging
|
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A
|
Ceramide 1 (Skin Conditioning, Hair Conditioning) |
![]() Anti Aging
|
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Banksia Serrata Flower Extract (Skin Conditioning, Hair Conditioning) |
|
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Citrus Australasica Fruit Extract (Skin Conditioning) |
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Davidsonia Pruriens Fruit Extract (Skin Conditioning, Humectant, Hair Conditioning, Antioxidant) |
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Hibiscus Sabdariffa Flower Extract (Skin Conditioning) |
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Melaleuca Alternifolia (Tea Tree) Leaf Extract (Skin Conditioning) |
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Santalum Acuminatum Fruit Extract (Humectant, Hair Conditioning, Antioxidant) |
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Tasmannia Lanceolata Fruit Extract (Skin Conditioning) |
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Telopea Speciosissima Flower/Leaf Extract |
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Terminalia Ferdinandiana Fruit Extract (Antioxidant, Bleaching) |
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A
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Aspartic Acid (Masking, Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
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A
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Leucine (Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Acetyl Octapeptide 3 (Skin Conditioning, Humectant) |
|
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A
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Caprooyl Phytosphingosine (Skin Conditioning, Hair Conditioning) |
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A
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Caprooyl Sphingosine (Skin Conditioning, Hair Conditioning) |
|
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A
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Alanine (Masking, Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
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A
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Lysine (Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
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A
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Arginine (Skin Conditioning, Masking, Fragrance, Antistatic Agent, Hair Conditioning) |
|
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A
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Tyrosine (Skin Conditioning, Masking, Fragrance, Antistatic Agent, Hair Conditioning, Skin-Conditioning Agent -Miscellaneous, Exclusive) |
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A
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Phenylalanine (Fragrance, Hair Conditioning, Skin Conditioning) |
|
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A
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Proline (Fragrance, Hair Conditioning, Skin Conditioning) |
|
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A
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Threonine (Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Hair Waving Or Straightening) |
|
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A
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Valine (Masking, Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
![]() |
A
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Isoleucine (Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
|
![]() |
A
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Histidine (Fragrance, Humectant, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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![]() ![]() |
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Limonene (Solvent, Perfuming, Deodorant) |
![]() Allergen
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![]() ![]() |
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Citral (Masking, Fragrance, Flavoring Agent) |
![]() Allergen
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Citronellol (Masking, Fragrance) |
![]() Allergen
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Geraniol (Masking, Fragrance, Tonic) |
![]() Allergen
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Linalool (Masking, Deodorant, Fragrance) |
![]() Allergen
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![]() ![]() |
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Eugenol (Masking, Fragrance, Denaturant , Tonic) |
![]() Allergen
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