377 Whitening Serum
The John Jeff 377 Whitening Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (28 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry skin.
The John Jeff 377 Whitening Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (28 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
Dry Skin
6/6
Oily/Acne-Prone Skin
No data
Sensitive Skin
3/6
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
1
|
|
Water
(Solvent) |
|
|
1
|
A
|
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
|
|
1
|
A
|
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
|
|
|
Isosorbide
(Humectant, Skin Conditioning) |
|
|
2
|
|
Dimethyl Ether
(Propellant, Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
|
|
3
|
A
|
Cyclopentasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent) |
Silicone
|
|
3
|
|
PEG/PPG-17/6 Copolymer
(Solvent) |
|
|
1
|
|
Polysilicone-11
(Film Forming) |
|
|
1
|
|
Diethylhexyl Carbonate
(Skin Conditioning, Emollient) |
|
|
3
|
A
|
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
|
|
1
|
A
|
Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
(Viscosity Controlling) |
|
|
1
|
A
|
Pentylene Glycol
(Skin Conditioning, Solvent) |
|
|
1
|
|
4-t-Butylcyclohexanol
(Masking, Perfuming) |
|
|
1
|
|
Ammonium Polyacryloyldimethyl Taurate
(Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling) |
|
|
1
|
|
Phenylethyl Resorcinol
(Antioxidant) |
|
|
1
2
|
A
|
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
|
|
1
|
|
Carnosine
(Skin Conditioning) |
|
|
|
|
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
|
|
1
|
|
Hydroxyacetophenone
(Antioxidant) |
|
|
1
|
A
|
1,2-Hexanediol
(Solvent) |
|
|
3
|
B
|
Sodium Acrylates Copolymer
(Binding Agent, Film Forming, Viscosity Increasing Agent, Binding, Opacifying, Viscosity Controlling) |
|
|
1
|
A
|
Polyisobutene
(Binding Agent, Film Forming, Viscosity Increasing Agent, Binding, Viscosity Controlling) |
|
|
1
|
|
PEG-7 Trimethylolpropane Coconut Ether
(Emulsifying, Surfactant) |
|
|
1
|
A
|
Sorbitan Isostearate
(Emulsifying, Surfactant) |
|
|
1
|
|
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
(Anticaking Agent, Emulsion Stabilising, Opacifying, Suspending Agent Nonsurfactant, Viscosity Increasing Agent) |
|
|
1
|
B
|
Isohexadecane
(Skin Conditioning, Emollient, Solvent) |
|
|
3
|
B
|
Polysorbate 80
(Denaturant, Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
1
|
A
|
Sorbitan Oleate
(Fragrance, Emulsifying, Surfactant) |
Bad for Oily Skin
Fungal Acne Trigger
|
|
2
|
A
|
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
|
4
|
B
|
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
|
|
1
|
A
|
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
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.
Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.
Niacinamide
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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