PDRN Rice & Green Tea Revitalizing Serum
The Knours PDRN Rice & Green Tea Revitalizing Serum is a serums, essence, ampoule. Our analysis of its 67 ingredients (47 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The Knours PDRN Rice & Green Tea Revitalizing Serum is a serums, essence, ampoule. Our analysis of its 67 ingredients (47 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Rice Ferment Filtrate
(Skin Conditioning) |
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Water
(Solvent) |
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1,2-Hexanediol
(Solvent) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Isopentyldiol
(Solvent) |
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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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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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Oryza Sativa Bran Water
(Fragrance, Perfuming) |
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Saccharomyces/Rice Ferment Filtrate
(Skin Conditioning) |
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Methylpropanediol
(Solvent) |
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Camellia Sinensis Leaf Water
(Masking, Perfuming, Tonic) |
Good for Oily Skin
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning) |
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Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising) |
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Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
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PEG-60 Hydrogenated Castor Oil
(Fragrance, Sufactant, Surfactant) |
Fungal Acne Trigger
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
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Inulin Lauryl Carbamate
(Emulsion Stabilising, Surfactant) |
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Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant) |
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Polyglutamic Acid
(Skin Conditioning) |
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Sodium Polyacrylate
(Absorbent, Emulsion Stabilising, Film Forming, Hair Fixing, Skin Conditioning Agent Emollient, Viscosity Controlling Agent, Viscosity Increasing Agent, Binding, Skin Conditioning) |
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Adenosine
(Skin Conditioning) |
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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ELAEIS GUINEENSIS OIL
(Skin Conditioning Emollient) |
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Zanthoxylum Piperitum Fruit Extract
(Skin Conditioning) |
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Usnea Barbata Extract
(Deodorant) |
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Pulsatilla Koreana Extract
(Skin Conditioning) |
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Malt Extract
(Skin Conditioning, Skin Protecting, Tonic) |
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Hydrolyzed Rice Bran Protein
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
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Hydrolyzed Rice Protein
(Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Polyglyceryl-4 Oleate
(Emulsifying) |
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Kummerowia Striata Extract
(Skin Conditioning) |
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Oryza Sativa Germ Extract
(Skin Conditioning Emollient) |
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Oryza sativa extract
(Abrasive, Absorbent, Bulking, Hair Conditioning, Skin Conditioning) |
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Oryza Sativa Bran Extract
(Skin Conditioning, Skin Protecting) |
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Ceramide NP
(Hair Conditioning, Skin Conditioning) |
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Cinchona Pubescens Bark Extract
(Skin Conditioning) |
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Rice Amino Acids
(Hair Conditioning, Skin Conditioning) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Vigna Angularis Seed Extract
(Skin Protecting) |
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Hordeum Vulgare Extract
(Emollient, Skin Conditioning) |
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Glycine Max Seed Extract
(Hair Conditioning, Skin Conditioning, Skin Protecting) |
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Avena sativa Kernel Extract
(Abrasive, Antioxidant, Skin Conditioning, Skin Conditioning Emollient) |
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Sucrose Palmitate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Cannabis Sativa Seed Extract
(Emollient) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Soluble Collagen
(Hair Conditioning, Skin Conditioning, Antistatic Agent, Film Forming, Humectant) |
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Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying) |
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Leptospermum Scoparium Leaf Extract
(Skin Conditioning) |
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Hydroxypropyltrimonium Hyaluronate
(Film Forming, Humectant) |
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Linoleic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linoleic Acid., Antistatic Agent, Emollient) |
Fungal Acne Trigger
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Retinyl Palmitate
(Skin Conditioning, Skin Conditioning Miscellaneous) |
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Sodium Surfactin
(Cleansing, Emulsifying, Gel Forming, Surfactant) |
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Linolenic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linolenic Acid., Antistatic Agent, Emollient, Perfuming) |
Fungal Acne Trigger
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Sodium Acetylated Hyaluronate
(Humectant) |
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Salvia Hispanica Seed Extract
(Emollient, Skin Conditioning) |
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Biotin
(Hair Conditioning, Skin Conditioning, Antiseborrhoeic) |
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Sodium DNA
(Skin Conditioning) |
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Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber) |
Good for Oily Skin
|
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Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning) |
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Hydrolyzed Sodium Hyaluronate
(Skin Conditioning) |
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Potassium Hyaluronate
(Skin Conditioning) |
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.
This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.
The concentrations these actives are typically effective at in research — not a measurement of this product.
Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.
Retinyl Palmitate
L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.
ASCORBIC ACID
Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.
Niacinamide
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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