Instantly Smoothing Serum
The Rudolph Care Instantly Smoothing Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (22 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The Rudolph Care Instantly Smoothing Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (22 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Aloe Barbadensis Leaf Extract
(Emollient, Humectant, Oral Care Agent, Skin Conditioning) |
Good for Sensitive Skin
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Capryloyl Glycerin/Sebacic Acid Copolymer
(Film Forming, Hair Conditioning, Skin Conditioning, Skin Protecting) |
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Coco-Caprylate
(Emollient) |
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Prunus Amygdalus Dulcis Oil
(Skin Conditioning) |
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Water
(Solvent) |
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Echinacea Purpurea Extract
(Moisturising, Skin Conditioning, Tonic) |
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prunus armeniaca kernel oil
(Fragrance, Skin Conditioning) |
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Zea Mays Starch
(Abrasive, Absorbent, Anticaking, Skin Protecting, Viscosity Controlling) |
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Anthemis Nobilis Flower Water
(Masking, Skin Conditioning) |
Good for Sensitive Skin
Good for Dry Skin
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Hamamelis Virginiana Leaf Water
(Astringent, Skin Conditioning) |
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Euterpe Oleracea Fruit Extract
(Hair Conditioning) |
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Saccharide Isomerate
(Humectant) |
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Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning) |
Good for Dry Skin
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Acacia Senegal Gum
(Adhesive, Fragrance, Film Forming, Masking) |
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Hydrolyzed Rhizobian Gum
(Film Forming) |
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Euterpe Oleracea Fruit Oil
(Skin Conditioning) |
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Hydrolyzed Rice Bran Protein
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
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Acmella Oleracea Extract
(Skin Protecting) |
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Spirulina Platensis Extract
(Skin Protecting) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling) |
Bad for Dry Skin
Bad for Sensitive Skin
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Glycine Soja Oil
(Perfuming, Skin Conditioning, Skin Conditioning Emollient) |
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PARFUM
(Fragrance, Perfuming) |
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Malic Acid
(Fragrance, Ph Adjuster, Buffering Agent) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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Potassium Sorbate
(Fragrance, Preservative) |
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Sodium Dehydroacetate
(Preservative) |
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Malic Acid
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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