PDRN Rice & Green Tea Clarifying Toner
The Knours PDRN Rice & Green Tea Clarifying Toner is a toner. Our analysis of its 90 ingredients (64 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The Knours PDRN Rice & Green Tea Clarifying Toner is a toner. Our analysis of its 90 ingredients (64 low-risk) rates it Excellent (98/100). 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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Rosa Damascena Flower Water
(Masking, Skin Conditioning, Skin Protecting) |
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1,2-Hexanediol
(Solvent) |
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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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Saccharomyces/Rice Ferment Filtrate
(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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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Camellia Sinensis Leaf Water
(Masking, Perfuming, Tonic) |
Good for Oily Skin
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Methylpropanediol
(Solvent) |
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
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Dioscorea Japonica Root Extract
(Skin Conditioning) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning) |
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Polyglyceryl-10 Oleate
(Skin Conditioning, Emulsifying, Surfactant) |
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Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising) |
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Polyglyceryl-10 Myristate
(Skin Conditioning, Emulsifying, Surfactant) |
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Polyglyceryl-6 Dioleate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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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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Betaine
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning, Viscosity Controlling) |
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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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Polyglyceryl-4 Laurate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Beta-Glucan
(Bulking Agent, Skin Conditioning) |
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Hydrolyzed Corn Starch
(Binding, Humectant, Skin Conditioning, Viscosity Controlling) |
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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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Adenosine
(Skin Conditioning) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Sucrose
(Flavoring Agent, Humectant, Skin Conditioning, Soothing) |
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Sodium Phytate
(Chelating Agent, Oral Care Agent) |
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Oryza Sativa Bran Water
(Fragrance, Perfuming) |
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Malt Extract
(Skin Conditioning, Skin Protecting, Tonic) |
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Pelargonium Graveolens Oil
(Masking, Perfuming) |
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Isopentyldiol
(Solvent) |
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Kummerowia Striata Extract
(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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Cinchona Pubescens Bark Extract
(Skin Conditioning) |
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Garcinia Cambogia Fruit Extract
(Skin Conditioning) |
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Sodium Chondroitin Sulfate
(Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Hydroxypropyltrimonium Hyaluronate
(Film Forming, Humectant) |
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Leptospermum Scoparium Leaf Extract
(Skin Conditioning) |
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Polyglyceryl-10 Stearate
(Skin Conditioning, Emulsifying, Surfactant) |
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Polyglyceryl-4 Oleate
(Emulsifying) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Ceramide NP
(Hair Conditioning, Skin Conditioning) |
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Polyglyceryl-4 Caprate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Sucrose Palmitate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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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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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Sodium Acetylated Hyaluronate
(Humectant) |
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Oryza sativa extract
(Abrasive, Absorbent, Bulking, Hair Conditioning, Skin Conditioning) |
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Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying) |
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Menadione
(Masking) |
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Oryza Sativa Germ Extract
(Skin Conditioning Emollient) |
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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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Oryza Sativa Bran Extract
(Skin Conditioning, Skin Protecting) |
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Sodium DNA
(Skin Conditioning) |
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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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Rice Amino Acids
(Hair Conditioning, Skin Conditioning) |
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Glycine Max Seed Extract
(Hair Conditioning, Skin Conditioning, Skin Protecting) |
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Hordeum Vulgare Extract
(Emollient, Skin Conditioning) |
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Avena sativa Kernel Extract
(Abrasive, Antioxidant, Skin Conditioning, Skin Conditioning Emollient) |
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Vigna Angularis Seed Extract
(Skin Protecting) |
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Capryloyl Salicylic Acid
(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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Cannabis Sativa Seed Extract
(Emollient) |
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Sodium Ascorbyl Phosphate
(Antioxidant) |
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Hydrolyzed Sodium Hyaluronate
(Skin Conditioning) |
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Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning) |
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Biotin
(Hair Conditioning, Skin Conditioning, Antiseborrhoeic) |
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Potassium Hyaluronate
(Skin Conditioning) |
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Soluble Collagen
(Hair Conditioning, Skin Conditioning, Antistatic Agent, Film Forming, Humectant) |
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Glyceryl Arachidonate
(Skin Conditioning, Emollient, Emulsifying) |
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Glyceryl Linolenate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Salvia Hispanica Seed Extract
(Emollient, Skin Conditioning) |
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
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Folic Acid
(Skin Conditioning) |
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Pyridoxine
(Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Thiamine HCl
(Masking, Skin Conditioning) |
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Cyanocobalamin
(Skin Conditioning) |
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Citronellol
(Fragrance, Masking) |
Allergens
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Geraniol
(Fragrance, Masking, Tonic) |
Allergens
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Linalool
(Fragrance, Deodorant, Masking) |
Allergens
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No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →
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.
Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.
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.
Sodium Ascorbyl Phosphate, ASCORBIC ACID
Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.
Niacinamide
Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.
Capryloyl Salicylic 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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