Vitamin C Daytime Repair Serum

Kate Ryan

Where to buy Possibly in stock

About this product

The Kate Ryan Vitamin C Daytime Repair Serum is a serums, essence, ampoule. Our analysis of its 32 ingredients (26 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
32
Low-risk
26
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 5/2
Good for dry skin
Caprylyl Glycol Sodium PCA Hyaluronic Acid Camellia Sinensis Leaf Extract Dimethylaminoethanol Tartrate
Caution for dry skin
Centella Asiatica Extract Camellia Sinensis Leaf Extract
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Magnesium Ascorbyl Phosphate Camellia Sinensis Leaf Extract
Sensitive Skin 16/6
Good for sensitive skin
Lycopene Resveratrol Magnesium Ascorbyl Phosphate Centella Asiatica Extract Superoxide Dismutase Ascorbyl Palmitate Ubiquinone Tetrahydrodiferuloylmethane Tetrahexyldecyl Ascorbate Hesperidin Methyl Chalcone Tetrahydrodemethoxydiferuloylmethane Tetrahydrobisdemethoxydiferuloylmethane Thioctic Acid Ferulic Acid Camellia Sinensis Leaf Extract Phloretin
Caution for sensitive skin
Glutathione Ascorbyl Palmitate Citric Acid Camellia Sinensis Leaf Extract Sorbic Acid Phenoxyethanol

Ingredients list

32 total
Lower hazard (1) Higher hazard (4)
All32 Skin Conditioning25 Antioxidant15 Hair Conditioning6 Humectant5 Fragrance4 Skin Protecting3 Antistatic Agent3 Emollient3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
Lactobacillus/Nereocystis Leutkeana Ferment Filtrate
(Hair Conditioning, Skin Conditioning)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
A
Magnesium Ascorbyl Phosphate
(Antioxidant)
1
Carnosine
(Skin Conditioning)
1
B
Carnitine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Tetrahydrodiferuloylmethane
(Antioxidant)
1
Tetrahydrodemethoxydiferuloylmethane
(Antioxidant, Oral Care Agent, Skin Conditioning)
1
Tetrahydrobisdemethoxydiferuloylmethane
(Antioxidant, Oral Care Agent, Skin Conditioning)
2
Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial)
1
Hesperidin Methyl Chalcone
(Antioxidant)
1
A
Ascorbyl Palmitate
(Antioxidant, Masking)
Fungal Acne
Fungal Acne Trigger
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
1
B
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber)
Good for Oily Skin
Good for Oily Skin
Phloretin
(Antioxidant, Antiseborrhoeic)
1
3
Aloe Barbadensis Extract
(Skin Conditioning)
1
Glutathione
(Fragrance, Reducing)
Dimethylaminoethanol Tartrate
(Emollient)
1
Ubiquinone
(Antioxidant, Skin Conditioning)
1
Resveratrol
(Antioxidant, Skin Protecting)
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
1
Lycopene
(Antioxidant, Cosmetic Colorant)
2
Thioctic Acid
(Antioxidant)
1
Superoxide Dismutase
(Reducing, Skin Conditioning, Antioxidant)
Catalase
(Hair Conditioning, Skin Conditioning Miscellaneous)
Sh-Oligopeptide-77
(Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
3
A
Sorbic Acid
(Fragrance, Preservative)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.
Niacinamide
Strengthens, smooths, and brightens skin.
Hyaluronic Acid
Hydrates by attracting and holding water.
Peptides
Supports skin hydration and improves firmness.

Benefits

Anti-AgingSoftens lines and helps skin look youthful.
BrighteningRestores radiance to dull, tired skin.
Redness ReducingSoothes visible redness and calms irritation.
Scar HealingImproves the look of marks and scars.
Reduces IrritationEases discomfort and supports skin resilience.
Reduces Large PoresMinimizes the look of enlarged pores.
HydratingBoosts hydration and relieves dry, tight skin.
Skin TextureSmooths rough patches and refines texture.

Concerns

Contains paraben
Not fungal acne (malassezia) safe

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Lactobacillus/Nereocystis Leutkeana Ferment Filtrate
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
Magnesium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Carnosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Carnitine
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Tetrahydrodiferuloylmethane
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Tetrahydrodemethoxydiferuloylmethane
Antioxidant, Oral care agent
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantOral care agentSkin conditioning
Tetrahydrobisdemethoxydiferuloylmethane
Antioxidant, Oral care agent
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantOral care agentSkin conditioning
Ferulic Acid
Antioxidant, Preservative
Low-hazard ingredient.Read moreShow less
EWG 2 AntioxidantPreservativeUv absorberAntimicrobial
Hesperidin Methyl Chalcone
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Hyaluronic Acid
Skin conditioning, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningViscosity increasing agentAntistatic agentHumectantMoisturising
Phloretin
Antioxidant, Antiseborrhoeic
Limited public safety data.Read moreShow less
EWG N/A AntioxidantAntiseborrhoeic
Aloe Barbadensis Extract
Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 1–3 Skin conditioning
+ 12 more — see the full ingredients list above
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
Ascorbyl Palmitate
Antioxidant, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AntioxidantMasking Fungal-acne trigger
Camellia Sinensis Leaf Extract
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntimicrobialAntioxidantAstringentEmollientHumectantMaskingOral care agentSkin conditioningSkin protectingTonicUv absorber Good for Oily Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

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.

Tetrahexyldecyl Ascorbate, Magnesium Ascorbyl Phosphate, Ascorbyl Palmitate

Niacinamide 2–5% (up to 10%)

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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