Hada Labo Gokujyun Alpha Serum
The Hada Labo Gokujyun Alpha Serum is a serums, essence, ampoule. Our analysis of its 30 ingredients (23 low-risk) rates it Excellent (87/100). Based on its ingredients, it looks well-suited to dry skin.
The Hada Labo Gokujyun Alpha Serum is a serums, essence, ampoule. Our analysis of its 30 ingredients (23 low-risk) rates it Excellent (87/100). 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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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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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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Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning) |
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Triethylhexanoin
(Fragrance, Hair Conditioning, Antistatic Agent, Emollient, Masking, Refatting, Skin Conditioning, Solvent) |
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Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
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Beta-Carotene
(Skin Conditioning) |
Good for Dry Skin
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BHT
(Antioxidant, Fragrance, Masking) |
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling) |
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Glyceryl Stearate
(Emollient, Emulsifying) |
Fungal Acne Trigger
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Helianthus Annuus (Sunflower) Seed Oil |
Fungal Acne Trigger
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Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant) |
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Hydrolyzed Soy Protein
(Antistatic Agent, Hair Conditioning, Humectant, Skin Conditioning) |
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Hydroxypropyl Methylcellulose
(Adhesive, Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Antistatic Agent, Binding, Surfactant, Viscosity Controlling) |
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Methylparaben
(Fragrance, Preservative) |
Paraben
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PEG-20 Sorbitan Isostearate
(Sufactant, Emulsifying, Surfactant) |
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PPG-10 Methyl Glucose Ether
(Hair Conditioning, Skin Conditioning) |
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Propylparaben
(Fragrance, Preservative, Perfuming) |
Paraben
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Pullulan
(Binding Agent, Film Forming, Binding) |
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Retinyl Palmitate (Vitamin A) |
Good for Dry Skin
Fungal Acne Trigger
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Sodium Acetylated Hyaluronate
(Humectant) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling) |
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Thioctic Acid
(Antioxidant) |
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Tocopherol (Vitamin E) |
Good for Dry Skin
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Triethanolamine
(Fragrance, Ph Adjuster, Emulsifying, Surfactant, Buffering Agent, Masking) |
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Zea Mays (Corn) Oil
(Fragrance, Hair Conditioning, Skin Conditioning Agent Occlusive, Emulsifying, Surfactant, Antistatic Agent, Emollient, Masking, Skin Conditioning, Solvent) |
Bad for Oily Skin
|
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.
This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.
The concentrations these actives are typically effective at in research — not a measurement of this product.
Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.
Retinyl Palmitate (Vitamin A)
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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