30% Pure Vitamin C Serum

KISOCare

Where to buy Possibly in stock

About this product

The KISOCare 30% Pure Vitamin C Serum is a serums, essence, ampoule. Our analysis of its 21 ingredients (16 low-risk) rates it Excellent (100/100). 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
21
Low-risk
16
Fragrance
Fragrance-free
Origin
Japan

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 6/5
Good for dry skin
Butylene Glycol Sodium Hyaluronate Glycerin Scutellaria Baicalensis Root Extract Camellia Sinensis Leaf Extract Bis-Glyceryl Ascorbate
Caution for dry skin
Centella Asiatica Extract Xanthan Gum Glycerin Scutellaria Baicalensis Root Extract Camellia Sinensis Leaf Extract
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Scutellaria Baicalensis Root Extract Camellia Sinensis Leaf Extract
Sensitive Skin 6/3
Good for sensitive skin
Centella Asiatica Extract Glycerin Polygonum Cuspidatum Root Extract Scutellaria Baicalensis Root Extract Camellia Sinensis Leaf Extract Bis-Glyceryl Ascorbate
Caution for sensitive skin
Butylene Glycol Glycerin Camellia Sinensis Leaf Extract

Ingredients list

21 total
Lower hazard (1) Higher hazard (3)
All21 Skin Conditioning15 Humectant7 Solvent5 Fragrance5 Antioxidant4 Emulsion Stabilising4 Viscosity Controlling4 Antimicrobial3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
Bis-Glyceryl Ascorbate
(Antioxidant, Humectant)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
1
Scutellaria Baicalensis Root Extract
(Astringent, Humectant, Soothing)
1
Polygonum Cuspidatum Root Extract
(Antioxidant)
glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
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
rosmarinus officinalis leaf extract
(Antimicrobial, Fragrance, Skin Conditioning)
CHAMOMILLA RECUTITA FLOWER EXTRACT
(Fragrance, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
3
B
Potassium Hydroxide
(Ph Adjuster, Buffering Agent)
1
A
Calcium Sodium Borosilicate
(Bulking Agent)
2
Silver Oxide
(Cosmetic Biocide, Antimicrobial)

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.
Vitamin E
Protects skin and soothes irritation.
Hyaluronic Acid
Hydrates by attracting and holding water.

Benefits

Barrier RepairStrengthen and restore your skin's natural barrier.
HydratingBoosts hydration and relieves dry, tight skin.
Redness ReducingSoothes visible redness and calms irritation.
Anti-AgingSoftens lines and helps skin look youthful.
Reduces IrritationEases discomfort and supports skin resilience.
BrighteningRestores radiance to dull, tired skin.
Scar HealingImproves the look of marks and scars.
Dark SpotsFades dark spots for even skin tone.

Concerns

Not fungal acne (malassezia) safe

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Bis-Glyceryl Ascorbate
Antioxidant, Humectant
Limited public safety data.Read moreShow less
EWG N/A AntioxidantHumectant
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Centella Asiatica Extract
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSkin conditioningSmoothingSoothingTonic
Scutellaria Baicalensis Root Extract
Astringent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 AstringentHumectantSoothing
Polygonum Cuspidatum Root Extract
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
glycyrrhiza glabra root extract
Bleaching, Perfuming
Limited public safety data.Read moreShow less
EWG N/A BleachingPerfumingSkin conditioningSkin conditioning emollientSmoothingSoothing
rosmarinus officinalis leaf extract
Antimicrobial, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntimicrobialFragranceSkin conditioning
CHAMOMILLA RECUTITA FLOWER EXTRACT
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioning
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Potassium Hydroxide
Ph adjuster, Buffering agent
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Ph adjusterBuffering agent
+ 2 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
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
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin

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.

Bis-Glyceryl Ascorbate

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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