Brightening Vitamin Serum with Vitamin C
The itk Brightening Vitamin Serum with Vitamin C is a serums, essence, ampoule. Our analysis of its 30 ingredients (26 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.
The itk Brightening Vitamin Serum with Vitamin C is a serums, essence, ampoule. Our analysis of its 30 ingredients (26 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
Dry Skin
8/4
Oily/Acne-Prone Skin
No data
Sensitive Skin
5/5
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
1
|
|
Water
(Solvent) |
|
|
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
Fungal Acne Trigger
|
|
B
|
Coco-Caprylate
(Emollient) |
|
|
1
|
A
|
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
|
|
1
|
|
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
|
|
1
2
|
A
|
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
|
|
1
|
|
Ascorbyl Tetraisopalmitate
(Antioxidant, Skin Conditioning, Emollient) |
|
|
1
|
A
|
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
|
|
1
|
|
Ascorbyl Glucoside
(Antioxidant) |
|
|
1
|
A
|
Biosaccharide Gum-1
(Skin Conditioning) |
|
4
|
A
|
Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
|
1
|
|
Polyacrylate Crosspolymer-6
(Emulsion Stabilising, Viscosity Controlling) |
|
|
1
|
A
|
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
|
|
3
|
A
|
Aminomethyl Propanol
(Ph Adjuster, Buffering Agent) |
|
|
1
|
|
C14-22 Alcohols
(Emulsion Stabilising) |
|
|
1
|
B
|
C12-20 Alkyl Glucoside
(Emulsifying, Surfactant) |
|
|
1
|
A
|
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
|
|
1
|
A
|
Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
|
|
1
|
A
|
Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
|
|
1
|
A
|
Plukenetia Volubilis Seed Oil
(Emollient, Humectant, Skin Protecting) |
|
|
1
|
A
|
Allantoin
(Skin Conditioning, Skin Protecting, Soothing) |
Good for Oily Skin
Good for Sensitive Skin
|
|
1
|
B
|
Disodium Phosphate
(Buffering Agent, Anticorrosive, Fragrance, Ph Adjuster, Masking) |
|
|
3
|
B
|
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic) |
|
|
1
|
A
|
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
|
|
1
|
A
|
Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
|
|
|
|
Calcium Dihydrogen Phosphate
(Buffering) |
|
|
3
|
B
|
Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
|
|
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
|
|
1
|
A
|
Palmitoyl Tripeptide-1
(Skin Conditioning) |
|
|
1
|
A
|
Palmitoyl Tetrapeptide-7
(Skin Conditioning) |
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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.
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.
Ascorbyl Tetraisopalmitate, Ascorbyl Glucoside
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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