Neo C25 Vitamin C Serum
The Obagi Neo C25 Vitamin C Serum is a emulsion. Our analysis of its 26 ingredients (14 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The Obagi Neo C25 Vitamin C Serum is a emulsion. Our analysis of its 26 ingredients (14 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
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Water
(Solvent) |
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
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Alcohol Denat.
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling) |
Bad for Dry Skin
Bad for Sensitive Skin
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PEG-8
(Humectant, Solvent) |
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Betaine
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning, Viscosity Controlling) |
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Isopentyldiol
(Solvent) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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3-O-ETHYL ASCORBIC ACID
(Skin Conditioning) |
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Harpagophytum Procumbens Root Extract
(Skin Conditioning) |
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Hydrolyzed Brassica Alba Seed Extract
(Skin Conditioning) |
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Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic) |
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Cynara Scolymus Leaf Extract
(Skin Conditioning) |
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Yeast Extract
(Skin Conditioning) |
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Papaver Somniferum Seed Extract
(Skin Conditioning) |
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Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Citrus Grandis Fruit Extract
(Astringent, Perfuming, Skin Conditioning, Tonic) |
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Methylglucoside Phosphate
(Skin Conditioning) |
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CI 77400
(Colorant) |
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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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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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PEG/PPG-300/55 Copolymer
(Surfactant) |
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PPG-6-Decyltetradeceth-30
(Emulsifying, Surfactant) |
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PARFUM
(Fragrance, Perfuming) |
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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.
ASCORBIC ACID, 3-O-ETHYL ASCORBIC 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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