Retinol 0.3% Serum

maru.derm

Where to buy Possibly in stock

About this product

The maru.derm Retinol 0.3% Serum is a emulsion. Our analysis of its 31 ingredients (30 low-risk) rates it Excellent (97/100). 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
Emulsion
Ingredients
31
Low-risk
30
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 8/5
Good for dry skin
Ethylhexyl Palmitate Sodium PCA Sodium Hyaluronate Glycerin Histidine Camellia Sinensis Leaf Extract Sodium Lactate PCA
Caution for dry skin
Stearic Acid Inulin Lauryl Carbamate Glycerin Camellia Sinensis Leaf Extract Sodium Hydroxide
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Camellia Sinensis Leaf Extract Retinol
Sensitive Skin 3/19
Good for sensitive skin
Ubiquinone Glycerin Camellia Sinensis Leaf Extract
Caution for sensitive skin
Glycine Valine Serine Stearic Acid Aspartic Acid Alanine Arginine Ethylhexyl Palmitate Isoleucine Glycerin Threonine Phenylalanine Proline Hydroxypropyl Cyclodextrin Histidine Camellia Sinensis Leaf Extract Sodium Benzoate Potassium Sorbate Retinol

Ingredients list

31 total
Lower hazard (1) Higher hazard (9)
All31 Skin Conditioning29 Fragrance16 Hair Conditioning14 Antistatic Agent11 Masking9 Humectant9 Emulsion Stabilising4 Buffering Agent3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Hydroxypropyl Cyclodextrin
(Chelating Agent, Emulsion Stabilising, Masking, Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Ubiquinone
(Antioxidant, Skin Conditioning)
1
Bakuchiol
(Cosmetic Biocide, Antimicrobial)
1
B
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber)
Good for Oily Skin
Good for Oily Skin
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
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
9
A
Retinol
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
B
Ethylhexyl Palmitate
(Fragrance, Skin Conditioning, Emollient, Perfuming)
Fungal Acne
Fungal Acne Trigger
1
A
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
1
Inulin Lauryl Carbamate
(Emulsion Stabilising, Surfactant)
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
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
2
A
Tetrasodium EDTA
(Chelating Agent)

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

Hydroxypropyl Cyclodextrin
Skin Conditioning
Sodium Hyaluronate
Skin Conditioning, Humectant
Ubiquinone
Antioxidant, Skin Conditioning
Camellia Sinensis Leaf Extract
Antioxidant, Astringent
Panthenol
Skin Conditioning
Glycerin
Humectant, Skin Protecting

Benefits

Good for dry skin
Good for oily/acne-prone skin

Concerns

Not fungal acne (malassezia) safe
Retinol — higher EWG
May not suit sensitive skin

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 →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Hydroxypropyl Cyclodextrin
Chelating agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentEmulsion stabilisingMaskingSkin conditioning
Ubiquinone
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Bakuchiol
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 1 Cosmetic biocideAntimicrobial
Inulin Lauryl Carbamate
Emulsion stabilising, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 Emulsion stabilisingSurfactant
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
+ 8 more — see the full ingredients list above
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Camellia Sinensis Leaf Extract
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntimicrobialAntioxidantAstringentEmollientHumectantMaskingOral care agentSkin conditioningSkin protectingTonicUv absorber Good for Oily Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
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
Retinol
Skin conditioning
Potentially a skin irritantRead moreShow less
EWG 9 CIR A Skin conditioning Bad for Sensitive Skin
Ethylhexyl Palmitate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollientPerfuming Fungal-acne trigger
Stearic Acid
Fragrance, Sufactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of stearic acid.Emulsion stabilisingMaskingRefatting Bad for Oily SkinFungal-acne trigger
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin

How to use

How to use

  • 1 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 2 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

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinol)

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.

Effective levels — general guide

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

Retinoids (Vitamin A) 0.01–1%

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.

Retinol

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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