Vitamin C Booster
The GOSH Vitamin C Booster is a emulsion. Our analysis of its 21 ingredients (16 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to dry skin.
The GOSH Vitamin C Booster is a emulsion. Our analysis of its 21 ingredients (16 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
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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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Bifida Ferment Lysate
(Skin Conditioning) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Fructooligosaccharides
(Humectant, Skin Conditioning) |
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Beta Vulgaris Extract
(Hair Conditioning, Skin Protecting) |
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VP/VA Copolymer
(Binding, Film Forming, Hair Fixing) |
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3-O-ETHYL ASCORBIC ACID
(Skin Conditioning) |
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Potassium Lactate
(Buffering Agent, Exfoliant, Humectant, Skin Conditioning) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Ammonium Polyacrylate
(Emulsion Stabilising, Film Forming, Stabilising, Surfactant) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Benzoic Acid
(Fragrance, Ph Adjuster, Preservative, Bulking Agent, Masking) |
Bad for Sensitive Skin
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Dehydroacetic Acid
(Preservative) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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CI 77491
(Colorant, Cosmetic Colorant) |
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CI 77492
(Colorant, Cosmetic Colorant) |
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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.
3-O-ETHYL ASCORBIC ACID
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Lactic 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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