Marine Algae Hyaluronic Serum

Matsu

Where to buy Possibly in stock

About this product

The Matsu Marine Algae Hyaluronic Serum is a serums, essence, ampoule. Our analysis of its 45 ingredients (40 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
45
Low-risk
40
Fragrance
Fragrance-free
Origin
Türkiye

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 14/3
Good for dry skin
Glucose Saccharide Isomerate Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Caprylyl Glycol Butylene Glycol Sodium PCA Sodium Hyaluronate Hydroxypropyltrimonium Hyaluronate Hydrolyzed Hyaluronic Acid Hyaluronic Acid Histidine Sodium Lactate PCA
Caution for dry skin
Punica Granatum Extract Xanthan Gum Sodium Hydroxide
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Punica Granatum Extract
Sensitive Skin 2/17
Good for sensitive skin
Spirulina Platensis Extract Copper Gluconate
Caution for sensitive skin
Glycine Valine Punica Granatum Extract Serine Sodium Citrate Aspartic Acid Alanine Arginine Isoleucine Butylene Glycol Tartaric Acid Threonine Phenylalanine Proline Histidine Citric Acid Phenoxyethanol

Ingredients list

45 total
Lower hazard (1) Higher hazard (4)
All45 Skin Conditioning45 Humectant16 Hair Conditioning15 Fragrance15 Antistatic Agent11 Masking10 Buffering Agent6 Ph Adjuster4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Spirulina Platensis Extract
(Skin Protecting)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Aspartic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
3
B
PCA
(Humectant, Moisturising)
1
A
Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning)
1
A
Alanine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Valine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Proline
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
Threonine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Hair Waving Or Straightening)
1
A
Isoleucine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
A
Histidine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Humectant)
1
A
Phenylalanine
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
1,2-Hexanediol
(Solvent)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Glucose
(Flavoring Agent, Humectant, Skin Conditioning Agent Miscellaneous)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Chondrus Crispus Extract
(Skin Conditioning, Viscosity Controlling)
1
Hydroxypropyltrimonium Hyaluronate
(Film Forming, Humectant)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
1
Sodium Acetylated Hyaluronate
(Humectant)
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
Hydrolyzed Sodium Hyaluronate
(Skin Conditioning)
1
Potassium Hyaluronate
(Skin Conditioning)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Hydroxyethylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Binding, Stabilising, Viscosity Controlling)
1
Saccharide Isomerate
(Humectant)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
1
Punica Granatum Extract
(Astringent, Masking, Tonic)
persea gratissima fruit extract
(Moisturising, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing)
2
A
Tetrasodium EDTA
(Chelating Agent)
1
Tartaric Acid
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Adenosine
(Skin Conditioning)
Cucurbita Pepo Fruit Extract
(Skin Conditioning)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
2
Copper Gluconate
(Skin Conditioning, Skin Protecting)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Spirulina Platensis Extract
Skin Protecting
Niacinamide
Skin Conditioning
Sodium PCA
Humectant, Skin Conditioning
Sodium Lactate
Exfoliant, Humectant
Arginine
Skin Conditioning
Aspartic Acid
Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin
Good for oily/acne-prone skin

Concerns

Contains paraben
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Spirulina Platensis Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Sodium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Buffering agentExfoliantHumectantKeratolytic
Arginine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Aspartic Acid
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
PCA
Humectant, Moisturising
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B HumectantMoisturising
Glycine
Buffering agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Buffering agentFragranceHair conditioningSkin-conditioning agent -miscellaneousAntistatic agentSkin conditioning
Alanine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Serine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Valine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Proline
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioning
Threonine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentHair waving or straightening
Isoleucine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agent
Histidine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentHumectant
+ 24 more — see the full ingredients list above
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Tartaric Acid
Fragrance, Ph adjuster
Skin irritation can occur at high concentrationRead moreShow less
EWG 1 FragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Tartaric 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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