C Complex Serum
The Josh Rosebrook C Complex Serum is a serums, essence, ampoule. Our analysis of its 27 ingredients (17 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The Josh Rosebrook C Complex Serum is a serums, essence, ampoule. Our analysis of its 27 ingredients (17 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
Dry Skin
6/4
Oily/Acne-Prone Skin
1/0
Sensitive Skin
4/7
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
1
|
|
Water
(Solvent) |
|
|
B
|
Aloe Barbadensis Leaf Juice
(Skin Conditioning) |
Good for Sensitive Skin
|
|
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
|
|
|
|
3-O-ETHYL ASCORBIC ACID
(Skin Conditioning) |
|
|
|
|
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient) |
|
|
|
|
limnanthes alba seed oil
(Skin Conditioning) |
|
|
1
|
|
Calophyllum Inophyllum Seed Oil
(Antimicrobial, Antioxidant, Hair Conditioning, Oral Care Agent, Skin Conditioning, Uv Absorber) |
|
|
|
|
Olea Europaea Fruit Oil
(Fragrance, Perfuming, Skin Conditioning) |
|
|
2
|
|
Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial) |
|
|
1
|
A
|
Disteardimonium Hectorite
(Stabilising, Viscosity Controlling) |
|
|
1
|
B
|
Polyglyceryl-2 Isostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
|
|
1
|
|
Polyglyceryl-6 Polyricinoleate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
|
|
1
|
A
|
Azelaic Acid
(Fragrance, Ph Adjuster, Buffering Agent, Masking) |
|
|
1
|
A
|
Dipotassium Glycyrrhizate
(Flavoring Agent, Skin Conditioning, Humectant) |
|
|
1
|
A
|
Rosa Canina Fruit Oil
(Emollient, Skin Conditioning) |
|
|
|
|
PERSEA GRATISSIMA OIL
(Skin Conditioning) |
|
|
1
|
A
|
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
|
|
2
|
A
|
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
|
|
1
|
|
Sorbitol
(Flavoring Agent, Fragrance, Humectant, Plasticizer, Skin Conditioning) |
|
|
1
|
A
|
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
|
|
|
|
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
|
4
|
|
Colloidal Gold
(Antimicrobial, Skin Conditioning) |
|
|
1
|
|
Glutathione
(Fragrance, Reducing) |
|
|
|
|
citrus aurantium dulcis peel oil
(Fragrance, Skin Conditioning) |
|
|
|
|
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
|
|
1
|
B
|
Phenethyl Alcohol
(Fragrance, Preservative, Masking) |
|
|
1
|
A
|
Ethylhexylglycerin
(Deodorant, 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.
3-O-ETHYL ASCORBIC ACID, 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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