Aqua Marine Deep Serum

Dr. Althea

Where to buy Possibly in stock

About this product

The Dr. Althea Aqua Marine Deep Serum is a serums, essence, ampoule. Our analysis of its 34 ingredients (28 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
34
Low-risk
28
Fragrance
Fragrance-free
Origin
South Korea
Data updated
May 2026

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 7/5
Good for dry skin
Sodium Hyaluronate Crosspolymer Oleyl Alcohol Butylene Glycol Sodium Hyaluronate Glycerin Fructooligosaccharides Hydrolyzed Hyaluronic Acid
Caution for dry skin
Maltodextrin Centella Asiatica Extract Agave Tequilana Leaf Extract Xanthan Gum Glycerin
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Agave Tequilana Leaf Extract
Sensitive Skin 4/7
Good for sensitive skin
Laminaria Japonica Extract Centella Asiatica Extract Glycerin Hydrolyzed Gardenia Florida Extract
Caution for sensitive skin
Laminaria Japonica Extract Sodium Chloride Oleyl Alcohol Butylene Glycol Glycerin Tromethamine Guaiazulene

Ingredients list

34 total
Lower hazard (1) Higher hazard (4)
All34 Skin Conditioning29 Viscosity Controlling8 Solvent7 Humectant7 Fragrance6 Emulsion Stabilising6 Hair Conditioning5 Film Forming3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Bambusa Vulgaris Water
(Skin Conditioning)
1
A
1,2-Hexanediol
(Solvent)
1
Water
(Solvent)
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
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
Raffinose
(Skin Conditioning)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
Lactococcus Ferment Lysate
(Skin Conditioning)
1
Fructooligosaccharides
(Humectant, Skin Conditioning)
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
1
Cyperus Rotundus Root Extract
(Skin Conditioning)
1
Sodium Chloride
(Bulking Agent, Masking, Oral Care Agent, Viscosity Controlling)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Adenosine
(Skin Conditioning)
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Sodium DNA
(Skin Conditioning)
1
Agave Tequilana Leaf Extract
(Cosmetic Astringent)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
1
Hydrolyzed Gardenia Florida Extract
(Antioxidant)
Hizikia Fusiforme Extract
(Skin Conditioning)
Sargassum Fulvellum Extract
(Skin Conditioning)
1
Laminaria Japonica Extract
(Fragrance, Skin Protecting)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
Caulerpa Lentillifera Extract
(Film Forming)
1
4
Guaiazulene
(Cosmetic Colorant, Fragrance, Antimicrobial, Perfuming)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
1
Dimethyl Isosorbide
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Oleyl Alcohol
(Fragrance, Skin Conditioning, Emollient, Solvent, Viscosity Increasingagent Nonaqueous, Emulsifying, Opacifying, Viscosity Controlling)
Bad for Oily Skin
Bad for Oily Skin
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)

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

Hyaluronic Acid
Hydrates by attracting and holding water.
Niacinamide
Strengthens, smooths, and brightens skin.
Antioxidants
Shields skin from free radical damage.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Scar HealingImproves the look of marks and scars.
Anti-AgingSoftens lines and helps skin look youthful.
Redness ReducingSoothes visible redness and calms irritation.
Reduces IrritationEases discomfort and supports skin resilience.
Skin TextureSmooths rough patches and refines texture.
Acne FightingFights acne and helps prevent breakouts.

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Bambusa Vulgaris Water
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Raffinose
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Lactococcus Ferment Lysate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Fructooligosaccharides
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Centella Asiatica Extract
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSkin conditioningSmoothingSoothingTonic
Cyperus Rotundus Root Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Sodium Chloride
Bulking agent, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 Bulking agentMaskingOral care agentViscosity controlling
Adenosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Tromethamine
Fragrance, Ph adjuster
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A FragrancePh adjusterBuffering agentMasking
+ 14 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning 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
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Oleyl Alcohol
Fragrance, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSkin conditioningEmollientSolventViscosity increasingagent - nonaqueousEmulsifyingOpacifyingViscosity controlling Bad for Oily Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning & evening: Suitable for both AM and PM use.

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

Trust & honesty

Officially notified as a cosmetic in Malaysia (NPRA). Government registration record.

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

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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