Lash Serum
The Kera Factor Lash Serum is a emulsion. Our analysis of its 26 ingredients (13 low-risk) rates it Excellent (98/100).
The Kera Factor Lash Serum is a emulsion. Our analysis of its 26 ingredients (13 low-risk) rates it Excellent (98/100).
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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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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Sodium DNA
(Skin Conditioning) |
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sh-Oligopeptide-1
(Skin Conditioning) |
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Sh-Oligopeptide-4
(Skin Conditioning) |
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sh-Polypeptide-1
(Skin Conditioning) |
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sh-Polypeptide-4
(Antioxidant, Hair Conditioning, Skin Conditioning) |
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sh-Polypeptide-7
(Antiseborrhoeic, Skin Protecting) |
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sh-Polypeptide-9
(Skin Conditioning) |
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sh-Polypeptide-11
(Skin Conditioning) |
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sh-Polypeptide-71
(Hair Conditioning, Skin Conditioning) |
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Sh-Polypeptide-86
(Skin Conditioning) |
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Nicotinamide Mononucleotide
(Antioxidant) |
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Adenosine
(Skin Conditioning) |
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Acetyl Cysteine
(Antioxidant, Skin Conditioning) |
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Ketoglutaric Acid
(Deodorant, Fragrance, Ph Adjuster) |
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3-O-ETHYL ASCORBIC ACID
(Skin Conditioning) |
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Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning) |
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Glutathione
(Fragrance, Reducing) |
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Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient) |
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Polysorbate 60
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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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
Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.
Nicotinamide Mononucleotide
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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